Sample records for broken thumbnail image

  1. Image upload with broken thumbnail image | OpenEI Community

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup | OpenHunan Runhua New EnergyIT Power

  2. Poster Title LA-UR Number Author(s) Thumbnail

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Water Individual Permit Posters 1 December 4, 2013 Poster Title LA-UR Number Author(s) Thumbnail Contributions of Nitrite-Nitrogen, Nitrate-Nitrogen, and Orthophosphate Levels in...

  3. Broken Symmetry

    ScienceCinema (OSTI)

    None

    2011-10-06T23:59:59.000Z

    - Physics, as we know it, attempts to interpret the diverse natural phenomena as particular manifestations of general laws. This vision of a world ruled by general testable laws is relatively recent in the history of mankind. Basically it was initiated by the Galilean inertial principle. The subsequent rapid development of large-scale physics is certainly tributary to the fact that gravitational and electromagnetic forces are long-range and hence can be perceived directly without the mediation of highly sophisticated technical devices. - The discovery of subatomic structures and of the concomitant weak and strong short-range forces raised the question of how to cope with short-range forces in relativistic quantum field theory. The Fermi theory of weak interactions, formulated in terms of point-like current-current interaction, was well-defined in lowest order perturbation theory and accounted for existing experimental data.However, it was inconsistent in higher orders because of uncontrollable divergent quantum fluctuations. In technical terms, in contradistinction to quantum electrodynamics, the Fermi theorywas not ?renormalizable?. This difficulty could not be solved by smoothing the point-like interaction by a massive, and therefore short-range, charged ?vector? particle exchange: theories with massive charged vector bosons were not renormalizable either. In the early nineteen sixties, there seemed to be insuperable obstacles to formulating a consistent theory with short-range forces mediated by massive vectors. - The breakthrough came from the notion of spontaneous symmetry breaking which arose in the study of phase transitions and was introduced in field theory by Nambu in 1960. - Ferromagnets illustrate the notion in phase transitions. Although no direction is dynamically preferred, the magnetization selects a global orientation. This is a spontaneous broken symmetry(SBS)of rotational invariance. Such continuous SBS imply the existence of ?massless? modes (here spin-waves), which are the ancestors of the NG bosons discussed below. Fluctuations of the order parameter (the magnetization) are described by a ?massive? SBS mode. - In field theory, Nambu showed that broken chiral symmetry from a spontaneous generation of hadron masses induces massless pseudoscalar modes (identified with a massless limit of pion fields). This illustrates a general phenomenon made explicit by Goldstone: massless Nambu-Goldstone (NG) bosons are a necessary concomitant of spontaneously broken continuous symmetries. Massive SBS scalars bosons describe, as in phase transitions, the fluctuations of the SBS order parameters. - In 1964, with Robert Brout, we discovered a mechanism based on SBS by which short range interactions are generated from long range ones. A similar proposal was then made independently by Higgs in a different approach. Qualitatively, our mechanism works as follows. The long range fundamental electromagnetic and gravitational interactions are governed by extended symmetries,called gauge symmetries, which were supposed to guarantee that the elementary field constituents which transmit the forces, photons or gravitons, be massless. We considered a generalization of the electromagnetic ?vector? field, known as Yang-Mills fields, and coupled them to fields which acquire from SBS constant values in the vacuum. These fields pervade space, as did magnetization, but they have no spatial orientation: they are ?scalar?? fields. The vector Yang-Mills fields which interact with the scalar fields become massive and hence the forces they mediate become short ranged. We also showed that the mechanism can survive in absence of elementary scalar fields. - Because of the extended symmetries, the nature of SBS is profoundly altered: the NG fields are absorbed into the massive vector Yang-Mills fields and restore the gauge symmetry. This has a dramatic consequence. To confront precision experiments, the mechanism should be consistent at the quantum mechanical level, or in technical terms, should yield a ?renormalizable? theory. From our analysi

  4. How can an external application get access to OpenEI images and thumbnails?

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup | Open EnergyInformationHorizon Fuel Cell TechnologiesHouston|

  5. Visible Light Digital Camera --Up to 2.3MP resolution with LED lamps provides sharp images

    E-Print Network [OSTI]

    Short, Daniel

    electrical and industrial applications · Thumbnail Image Gallery -- Allows quick search of stored images Marker Function · Auto Hot/Cold spot marker function shows a spot within the area that automatically% of reading Image Storage (1GB micro SD card) 1000 Images 1000 Images 1000 Images Emissivity Table 0.1 to 1

  6. How Do You Mend a Broken Heart?

    E-Print Network [OSTI]

    Service, Shannon

    2011-01-01T23:59:59.000Z

    Rebounding from a broken heart, then, may not so dissimilarHow Do You Mend a Broken Heart? It was seven hours into ourartists often do: they put their hearts on display. Cobbling

  7. How Do You Mend a Broken Heart?

    E-Print Network [OSTI]

    Service, Shannon

    2012-01-01T23:59:59.000Z

    Rebounding from a broken heart, then, may not so dissimilarHow Do You Mend a Broken Heart? It was seven hours into ourartists often do: they put their hearts on display. Cobbling

  8. Spontaneously broken quark helicity symmetry

    SciTech Connect (OSTI)

    Dalley, Simon [Department of Physics, University of Wales Swansea, Singleton Park, Swansea SA2 8PP (United Kingdom); McCartor, Gary [Department of Physics, SMU Dallas, TX 75275 (United States)]. E-mail: mccartor@mail.physics.smu.edu

    2006-02-15T23:59:59.000Z

    We discuss the origin of chiral-symmetry breaking in the light-cone representation of QCD. In particular, we show how quark helicity symmetry is spontaneously broken in SU (N) gauge theory with massless quarks if that theory has a condensate of fermion light-cone zero modes. The symmetry breaking appears as induced interactions in an effective light-cone Hamiltonian equation based on a trivial vacuum. The induced interaction is crucial for generating a splitting between pseudoscalar and vector meson masses, which we illustrate with spectrum calculations in some 1 + 1-dimensional reduced models of gauge theory.

  9. Inflation from Broken Scale Invariance

    E-Print Network [OSTI]

    Csaba Csaki; Nemanja Kaloper; Javi Serra; John Terning

    2014-06-19T23:59:59.000Z

    We construct a model of inflation based on a low-energy effective theory of spontaneously broken global scale invariance. This provides a shift symmetry that protects the inflaton potential from quantum corrections. Since the underlying scale invariance is non-compact, arbitrarily large inflaton field displacements are readily allowed in the low-energy effective theory. A weak breaking of scale invariance by almost marginal operators provides a non-trivial inflaton minimum, which sets and stabilizes the final low-energy value of the Planck scale. The underlying scale invariance ensures that the slow-roll approximation remains valid over large inflaton displacements, and yields a scale invariant spectrum of perturbations as required by the CMB observations.

  10. Bristol Heart Institute issue broken heart

    E-Print Network [OSTI]

    Bristol, University of

    Bristol Heart Institute issue Mending a broken heart The energy powerhouse Plaques, cracks and heart attacks re:search University of Bristol · June 2006 #12;BRISTOL HEART INSTITUTE ISSUE · JUNE 2006 THE BRISTOL HEART INSTITUTE 1 C ardiovascular disease is the UK's single biggest killer of both men and women

  11. Spectral characterizations of sun graphs and broken sun graphs

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Spectral characterizations of sun graphs and broken sun graphs Romain Boulet 10 Dec 2009 Abstract- cyclic graphs. An odd (resp. even) sun is a graph obtained by appending a pendant vertex to each vertex of an odd (resp. even) cycle. A broken sun is a graph obtained by deleting pendant vertices of a sun

  12. The Brain, the Broken Brain & the Neural Biology of Language

    E-Print Network [OSTI]

    Collar, Juan I.

    The Brain, the Broken Brain & the Neural Biology of Language Presenter: Steven Small Time & Date.maproom.com )1949 N. Hoyne Café Email list https://cfcpwork.uchicago.edu/mailman/listinfo/cafe #12;The Brain, the Broken Brain & the Neural Biology of Language Presenter: Steven Small Time & Date: 7-9 PM Monday

  13. A Broken System: The Persistent Patterns of Reversals of Death

    E-Print Network [OSTI]

    Gelman, Andrew

    A Broken System: The Persistent Patterns of Reversals of Death Sentences in the United States process for all death sentences in U.S. states between 1973 and 1995. The reversal rate was high Sentence Reversals in the United States 1 See Stuart Banner, The Death Penalty: An American History 267

  14. A Condition Monitoring Vector Database Approach for Broken Bar Fault Diagnostics of Induction Machines

    E-Print Network [OSTI]

    Povinelli, Richard J.

    to diagnose electric machine faults, such as stator winding inter-turn shorts, broken rotor bars, broken end-stepping Finite-Element method. The CMV consists of the negative sequence components of winding voltages, currents

  15. A Cure for the Valentine's Blues? Livermore Supercomputer Seeks to Mend Broken Hearts

    Broader source: Energy.gov [DOE]

    Cupid's arrows may help you find love, but an Energy Department supercomputer is working to help cure broken hearts.

  16. Regularization Dependence of Running Couplings in Softly Broken Supersymmetry

    E-Print Network [OSTI]

    Stephen P. Martin; Michael T. Vaughn

    2008-07-24T23:59:59.000Z

    We discuss the dependence of running couplings on the choice of regularization method in a general softly-broken N=1 supersymmetric theory. Regularization by dimensional reduction respects supersymmetry, but standard dimensional regularization does not. We find expressions for the differences between running couplings in the modified minimal subtraction schemes of these two regularization methods, to one loop order. We also find the two-loop renormalization group equations for gaugino masses in both schemes, and discuss the application of these results to the Minimal Supersymmetric Standard Model.

  17. City of Broken Bow, Nebraska (Utility Company) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof EnergyInnovationin Urban Transport |City ofBlue Earth,City of Broken Bow, Nebraska

  18. Local heat transfer distribution in a square channel with 90 continuous, 90 saw tooth profiled and 60 broken ribs

    SciTech Connect (OSTI)

    Gupta, Abhishek; SriHarsha, V.; Prabhu, S.V.; Vedula, R.P. [Department of Mechanical Engineering, IIT Bombay, Powai, Mumbai 400 076 (India)

    2008-02-15T23:59:59.000Z

    Internal channel cooling is employed in advanced gas turbines blade to allow high inlet temperatures so as to achieve high thrust/weight ratios and low specific fuel consumption. The objective of the present study is to measure the local heat transfer distributions in a double wall ribbed square channel with 90 continuous, 90 saw tooth profiled and 60 V-broken ribs. Comparison is made between the 90 continuous ribs (P/e = 7 and 10 for a e/D = 0.15) and 90 saw tooth profiled rib configurations (P/e = 7 for an e/D = 0.15) for the same rib height to the hydraulic diameter ratio (e/D). The effect of pitch to rib height ratio (P/e = 7.5,10 and 12) of 60 V-broken ribbed channel with a constant rib height to hydraulic diameter ratio (e/D) of 0.0625 on the local heat transfer distribution is studied. The Reynolds number based on duct hydraulic diameter is ranging from 10,000 to 30,000. A thin stainless steel foil of 0.05 mm thickness is used as heater and infrared thermography technique is used to obtain the local temperature distribution on the surface. The images are captured in the periodically fully developed region of the channel. It is observed that the heat transfer augmentations in the channel with 90 saw tooth profiled ribs are comparable with those of 90 continuous ribs. The enhancements caused by 60 V-broken ribs are higher than those of 90 continuous ribs. The effect of pitch to the rib height ratio (P/e) is not significant for channel with 60 V-broken ribs for a given rib height to hydraulic diameter ratio (e/D = 0.0625). (author)

  19. Entanglement Entropy of Systems with Spontaneously Broken Continuous Symmetry

    E-Print Network [OSTI]

    Max A. Metlitski; Tarun Grover

    2015-01-08T23:59:59.000Z

    We study entanglement properties of systems with spontaneously broken continuous symmetry. We find that in addition to the expected area law behavior, the entanglement entropy contains a subleading contribution which diverges logarithmically with the subsystem size in agreement with the Monte Carlo simulations of A. Kallin et. al. (Phys. Rev. B 84, 165134 (2011)). The coefficient of the logarithm is a universal number given simply by $N_G (d-1)/2$, where $N_G$ is the number of Goldstone modes and $d$ is the spatial dimension. This term is present even when the subsystem boundary is straight and contains no corners, and its origin lies in the interplay of Goldstone modes and restoration of symmetry in a finite volume. We also compute the "low-energy" part of the entanglement spectrum and show that it has the same characteristic "tower of states" form as the physical low-energy spectrum obtained when a system with spontaneously broken continuous symmetry is placed in a finite volume.

  20. On a Broken Formal Symmetry between Kinetic and Gravitational Energy

    E-Print Network [OSTI]

    Armin Nikkhah Shirazi

    2014-07-16T23:59:59.000Z

    Historically, the discovery of symmetries has played an important role in the progress of our fundamental understanding of nature. This paper will demonstrate that there exists in Newtonian theory in a spherical gravitational field a formal symmetry between the kinetic (KE) and gravitational potential energy (GPE) of a test mass. Put differently, there exists a way of expressing GPE such that the form of the mathematical expression remains invariant under an interchange of KE and GPE. When extended to relativity by a suitable assumption, it leads to a framework that bridges the general relativistic and Newtonian conceptions of gravitational energy, even though the symmetry is broken except in the infinitesimal limit. Recognizing this symmetry at infinitesimal scales makes it possible to write a relativistic equation of an individual graviton, the properties of which under under one interpretation may be unexpected.

  1. Critical fermion density for restoring spontaneously broken symmetry

    E-Print Network [OSTI]

    Hagen Kleinert; She-Sheng Xue

    2014-05-12T23:59:59.000Z

    We show how the phenomenon of spontaneous symmetry breakdown is affected by the presence of a sea of fermions in the system. When its density exceeds a critical value, the broken symmetry can be restored. We calculate the critical value and discuss the consequences for three different physical systems: First, for the standard model of particle physics, where the spontaneous symmetry breakdown leads nonzero masses of intermediate gauge bosons and fermions. The symmetry restoration will greatly enhance various processes with dramatic consequences for the early universe. Second, for the Gell-Mann--L\\`evy $\\sigma$-model of nuclear physics, where the symmetry breakdown gives rise to the nucleon and meson masses. The symmetry restoration may have important consequences for formation or collapse of stellar cores. Third, for the superconductive phase of condensed-matter, where the BCS condensate at low-temperature may be destroyed by a too large electron density.

  2. Phases of holographic superconductors with broken translational symmetry

    E-Print Network [OSTI]

    Baggioli, Matteo

    2015-01-01T23:59:59.000Z

    We consider holographic superconductors in a broad class of massive gravity backgrounds. These theories provide a holographic description of a superconductor with broken translational symmetry. Such models exhibit a rich phase structure: depending on the values of the temperature and the doping the boundary system can be in superconducting, normal metallic or normal pseudo-insulating phases. Furthermore the system supports interesting collective excitations of the charge carriers, which appears in the normal phase, persists in the superconducting phase, but eventually gets destroyed by the superconducting condensate. We also show the possibility of building a phase diagram of a system with the superconducting phase occupying a dome-shaped region, therefore resembling more of a real-world doped high-Tc superconductor.

  3. A Reconfigurable Motor for Experimental Emulation of Stator Winding Inter-Turn and Broken Bar Faults

    E-Print Network [OSTI]

    Povinelli, Richard J.

    A Reconfigurable Motor for Experimental Emulation of Stator Winding Inter-Turn and Broken Bar emulation of stator winding inter-turn and broken rotor bar faults, are presented in this paper such as stator windings or rotor bars when acquiring data from a knWi dinL lar Bearit faulty machine for fault

  4. Broken Weyl-Invariance and the Origin of Mass

    E-Print Network [OSTI]

    W. Drechsler; H. Tann

    1998-02-17T23:59:59.000Z

    A massless Weyl-invariant dynamics of a scalar, a Dirac spinor, and electromagnetic fields is formulated in a Weyl space, $W_4$, allowing for conformal rescalings of the metric and of all fields with nontrivial Weyl weight together with the associated transformations of the Weyl vector fields $\\ka_\\mu$ representing the D(1) gauge fields with D(1) denoting the dilatation group. To study the appearance of nonzero masses in the theory the Weyl-symmetry is broken explicitly and the corresponding reduction of the Weyl space $W_4$ to a pseudo-Riemannian space $V_4$ is investigated assuming the breaking to be determined by an expression involving the curvature scalar $R$ of the $W_4$ and the mass of the scalar, selfinteracting field. Thereby also the spinor field acquires a mass proportional to the modulus $\\Phi$ of the scalar field in a Higgs-type mechanism formulated here in a Weyl-geometric setting with $\\Phi$ providing a potential for the Weyl vector fields $\\ka_\\mu$. After the Weyl-symmetry breaking one obtains generally covariant and U(1) gauge covariant field equations coupled to the metric of the underlying $V_4$. This metric is determined by Einstein's equations, with a gravitational coupling constant depending on $\\Phi$, coupled to the energy-momentum tensors of the now massive fields involved together with the (massless) radiation fields.

  5. Imaging

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem NotEnergy,ARMFormsGasReleaseSpeechesHallNotSeventyTechnologiesfacilityImaging

  6. Imaging

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC) EnvironmentalGyroSolé(tm)Hydrogen StorageITERITERBuilding EnergyImaging Print The

  7. Imaging

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC) EnvironmentalGyroSolé(tm)Hydrogen StorageITERITERBuilding EnergyImaging Print

  8. Energy levels of odd-even nuclei using broken pair model

    SciTech Connect (OSTI)

    Hamammu, I. M.; Haq, S.; Eldahomi, J. M. [Department of Physics, Faculty of Science Benghazi University, P. O. Box 9480 Benghazi (Libya)

    2012-09-06T23:59:59.000Z

    A method to calculate energy levels and wave functions of odd-even nuclei, in the frame work of the broken pair model have been developed. The accuracy of the model has been tested by comparing the shell model results of limiting cases in which the broken pair model exactly coincides with the shell model, where there are two-proton/neutron + one-neutron/proton in the valence levels. The model is then applied to calculate the energy levels of some nuclei in the Zirconium region. The model results compare reasonably well with the shell model as well as with the experimental data.

  9. Broken and inhomogeneous cloud impact on satellite cloud particle effective radius and cloudphase retrievals

    E-Print Network [OSTI]

    Stoffelen, Ad

    on the particle size distribution, height, and thermo- dynamic phase of clouds. Water and ice clouds have parameterizations is the global dis- tribution of cloud thermodynamic phase, i.e., whether a cloud is composed on satellitederived cloud particle effective radius (re) and cloud phase (CPH) for broken and overcast inhomogeneous

  10. Detection of Broken Bars in Induction Motors Using an Extended Kalman Filter

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Detection of Broken Bars in Induction Motors Using an Extended Kalman Filter for Rotor Resistance and currents are processed by an Extended Kalman Filter for the speed and rotor resistance simultaneous bars. In the proposed extended Kalman Filter approach, the state covariance matrix is adequacy weighted

  11. Exact beta-functions in softly-broken N=2 Chern-Simons matter theories

    E-Print Network [OSTI]

    I. Jack; C. Luckhurst

    2011-01-21T23:59:59.000Z

    We present exact results for the beta-functions for the soft-breaking parameters in softly-broken N=2 Chern-Simons matter theories in terms of the anomalous dimension in the unbroken theory. We check our results explicitly up to the two loop level.

  12. Broken Ground: Plowing and America's Cultural Landscape in the 1930s

    E-Print Network [OSTI]

    Meyer, Kate

    2011-05-31T23:59:59.000Z

    BROKEN GROUND: PLOWING AND AMERICA’S CULTURAL LANDSCAPE IN THE 1930s By Copyright 2011 Kate M. Meyer Submitted to the graduate degree program in the Kress Foundation Department of Art History and the Graduate Faculty... ________________________________ James R. Shortridge ________________________________ Stephen Goddard ________________________________ Elizabeth Schultz Date Defended: 8 April 2011 ii The Dissertation Committee for Kate M. Meyer certifies...

  13. On the theory of a non-linear neutral scalar field with spontaneously broken symmetry

    E-Print Network [OSTI]

    Y. M. Poluektov

    2015-07-08T23:59:59.000Z

    On the example of a real scalar field, an approach to quantization of non-linear fields and construction of the perturbation theory with account of spontaneous symmetry breaking is proposed. The method is based on using as the main approximation of the relativistic self-consistent field model, in which the influence of vacuum field fluctuations is taken into account when constructing the one-particle states. The solutions of the self-consistent equations determine possible states, which also include the states with broken symmetries. Different states of the field are matched to particles, whose masses are determined by both parameters of the Lagrangian and vacuum fluctuations. The density of the vacuum energy in these states is calculated. It is shown that the concept of Bogolubov's quasi-averages can naturally be applied for definition of exact Green functions in the states with broken symmetries. Equations for exact one- and two-point Green functions are obtained.

  14. The effect of stress cracked and broken corn kernels on alkaline processing losses

    E-Print Network [OSTI]

    Jackson, David Scott

    1986-01-01T23:59:59.000Z

    (~. 70, P&. 06). There were significant differences in COD and DML (KRATIO= 100) between highly damaged corn and the less damaged counterpart of the same hybrid. Stress cracked corn, however, only slightly increased COD and DML. The ease of pericarp... Sigruficance of Com and Cooking Parameters . . . LIST OF FIGURES Page Stress Crack, Pericarp, and Broken Kernel Damage of Corn . . Flow Chart of Procedutes and Differences Between Cook Methods I and H 21 24 Correlation between Thousand Kernel Weight...

  15. Defect assistant band alignment transition from staggered to broken gap in mixed As/Sb tunnel field effect transistor heterostructure

    E-Print Network [OSTI]

    Yener, Aylin

    .3As heterointerface. As a result, the band alignment was converted from staggered gap to broken gap-to-source voltage, VGS. As the SS of a MOSFET is governed by the transport mechanism of thermionic-emission over

  16. ARM - Publications: Science Team Meeting Documents: ARM Thumbnail Browser

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa-Anomalous Radiative AbsorptionARM In TheACloudStatus,NewatmosphericState Best

  17. Poster Title LA-UR Number Author(s) Thumbnail

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah Project Office PressPostdoctoral OpportunitiesRadiationJ.

  18. B-L-violation in Softly Broken Supersymmetry and Neutrinoless Double Beta Decay

    E-Print Network [OSTI]

    M. Hirsch; H. V. Klapdor-Kleingrothaus; S. G. Kovalenko

    1997-01-12T23:59:59.000Z

    We prove a low-energy theorem valid for any model of weak scale softly broken supersymmetry. It claims that the neutrino Majorana mass, the B-L violating mass of the sneutrino and the neutrinoless double beta decay amplitude are intimately related to each other such that if one of them is non-zero the other two are also non-zero and, vice versa, if one of them vanishes the other two vanish as well. The theorem is a consequence of the underlying supersymmetry and independent of the mechanisms of neutrinoless double beta decay and (s-)neutrino mass generation.

  19. Generation of genuine $?$-type four-particle entangled state of superconducting artificial atoms with broken symmetry

    E-Print Network [OSTI]

    Chun-Ling Leng; Qi Guo; Xin Ji; Shou Zhang

    2014-12-11T23:59:59.000Z

    We propose a scheme for generating a genuine $\\chi$-type four-particle entangled state of superconducting artificial atoms with broken symmetry by using one-dimensional transmission line resonator as a data bus. The $\\Delta$-type three-level artificial atom we use in the scheme is different from natural atom and has cyclic transitions. After suitable interaction time and simple operations, the desired entangled state can be obtained. Since artificial atomic excited states and photonic states are adiabatically eliminated, our scheme is robust against the spontaneous emissions of artificial atoms and the decays of transmission line resonator.

  20. Spontaneously broken topological SL(5,R) gauge theory with standard gravity emerging

    SciTech Connect (OSTI)

    Mielke, Eckehard W. [Universidad Autonoma Metropolitana Iztapalapa, Apartado Postal 55-534, C.P. 09340, Mexico, D.F. (Mexico)

    2011-02-15T23:59:59.000Z

    A completely metric-free sl(5,R) gauge framework is developed in four dimensions. After spontaneous symmetry breaking of the corresponding topological BF scheme, Einstein spaces with a tiny cosmological constant emerge, similarly as in (anti-)de Sitter gauge theories of gravity. The induced {Lambda} is related to the scale of the symmetry breaking. A ''background'' metric surfaces from a Higgs-like mechanism. The finiteness of such a topological scheme converts into asymptotic safeness after quantization of the spontaneously broken model.

  1. Percutaneous Vertebroplasty in a Broken Vertebral Titanium Implant (Titanium Mesh Cage)

    SciTech Connect (OSTI)

    Bierry, G.; Buy, X.; Mohan, P. Chandra; Cupelli, J. [University Hospital of Strasbourg, Department of Radiology B (France); Steib, J.P. [University Hospital of Strasbourg, Department of Orthopedic and Spinal Surgery (France); Gangi, A. [University Hospital of Strasbourg, Department of Radiology B (France)], E-mail: gangi@rad6.u-strasbg.fr

    2006-08-15T23:59:59.000Z

    We report the case of a percutaneous consolidation of a broken vertebral implant (Surgical Titanium Mesh Implants; DePuy Spine, Raynham, MA, USA) by vertebroplasty. Four years after anterior spondylectomy with cage implantation and stabilization with posterior instrumentation, the patient was admitted for excruciating back pain. Radiographs showed fracture of the cage, screw, and rod. An anterior surgical approach was deemed difficult and a percutaneous injection of polymethyl methacrylate into the cage was performed following posterior instrumentation replacement. This seems to be an interesting alternative to the classical anterior surgical approach, which is often difficult in postoperative conditions.

  2. Definition of the Electromagnetic Field in the Broken-Symmetry Phase of the Electroweak Theory

    E-Print Network [OSTI]

    Ola Tornkvist

    1998-05-08T23:59:59.000Z

    In the broken-symmetry phase of the electroweak theory there is no unique definition of the electromagnetic field tensor in cases where the magnitude of the Higgs field differs from a constant value. The meaning of the electromagnetic field is therefore dubious near defects and during non-equilibrium stages of the electroweak phase transition. Nevertheless, by imposing a minimal set of natural requirements one is led to a specific, gauge-invariant definition that retains the familiar properties of an electromagnetic field. An electromagnetic vector potential is constructed whose curl (exterior derivative) in any gauge gives the electromagnetic field tensor. As is required, this vector potential transforms at most by a pure gradient under arbitrary SU(2)xU(1) gauge transformations. The flux of the magnetic field is expressed as a gauge-invariant line integral. Curiously, this provides a definition for magnetic flux in cases where the spatial region with broken symmetry is not simply connected and the magnetic field itself is not everywhere defined.

  3. If it's Broken, Don't Fix it: The Government of the Euro area in the EU "Reform Treaty"

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    If it's Broken, Don't Fix it: The Government of the Euro area in the EU "Reform Treaty" N° 2007: The Government of the Euro area in the EU "Reform Treaty" Éloi Laurent OFCE (Sciences-po Center for Economic failure. This paper examines the reforms of the "economic governance" of the euro area proposed

  4. While the laws of physics are often symmetric, physical properties often reflect broken symmetry, in which a

    E-Print Network [OSTI]

    Weston, Ken

    . In this experiment Landau levels in graphene were used to study the breaking of SU (4) symmetry--a higher dimensional analog of the symmetry of rotations. In graphene, broken symmetry states manifest as additional integer states by their spin polarization. It was found that graphene turns into either a spin ferromagnet

  5. Home Articles Directions Contact Green Resources & Links The Green Building Gallery Posted by Branden Klayko: Broken Sidewalk.

    E-Print Network [OSTI]

    Home Articles Directions Contact Green Resources & Links The Green Building Gallery Posted by Branden Klayko: Broken Sidewalk. The Green Building on East Market Street in the new ly named Nu The Green Building green. The 110-year-old structure is in the running for LEED Platinum certification

  6. BROKEN AND UNBROKEN: THE MILKY WAY AND M31 STELLAR HALOS

    SciTech Connect (OSTI)

    Deason, A. J. [Department of Astronomy and Astrophysics, University of California Santa Cruz, Santa Cruz, CA 95064 (United States)] [Department of Astronomy and Astrophysics, University of California Santa Cruz, Santa Cruz, CA 95064 (United States); Belokurov, V.; Evans, N. W. [Institute of Astronomy, Madingley Road, Cambridge CB3 0HA (United Kingdom)] [Institute of Astronomy, Madingley Road, Cambridge CB3 0HA (United Kingdom); Johnston, K. V., E-mail: alis@ucolick.org [Department of Astronomy, Columbia University, New York, NY 10027 (United States)

    2013-02-15T23:59:59.000Z

    We use the Bullock and Johnston suite of simulations to study the density profiles of L*-type galaxy stellar halos. Observations of the Milky Way and M31 stellar halos show contrasting results: the Milky Way has a 'broken' profile, where the density falls off more rapidly beyond {approx}25 kpc, while M31 has a smooth profile out to 100 kpc with no obvious break. Simulated stellar halos, built solely by the accretion of dwarf galaxies, also exhibit this behavior: some halos have breaks, while others do not. The presence or absence of a break in the stellar halo profile can be related to the accretion history of the galaxy. We find that a break radius is strongly related to the buildup of stars at apocenters. We relate these findings to observations, and find that the 'break' in the Milky Way density profile is likely associated with a relatively early ({approx}6-9 Gyr ago) and massive accretion event. In contrast, the absence of a break in the M31 stellar halo profile suggests that its accreted satellites have a wide range of apocenters. Hence, it is likely that M31 has had a much more prolonged accretion history than the Milky Way.

  7. To do list for laser maintenance 8.28-8.30 1. Clean the turning box and compressor chamber, remove all broken glass piece on bread board

    E-Print Network [OSTI]

    Shvets, Gennady

    and compressor chamber, remove all broken glass piece on bread board and mirror mount all optics in turning box and compressor chamber, replace all optics with damage spots on it, measure the reflectivity of compressor. 4. Check focal spot

  8. Model-Independent Analysis of Tri-bimaximal Mixing: A Softly-Broken Hidden or an Accidental Symmetry?

    SciTech Connect (OSTI)

    Albright, Carl H.; /Northern Illinois U. /Fermilab; Rodejohann, Werner; /Heidelberg, Max Planck Inst.

    2008-04-01T23:59:59.000Z

    To address the issue of whether tri-bimaximal mixing (TBM) is a softly-broken hidden or an accidental symmetry, we adopt a model-independent analysis in which we perturb a neutrino mass matrix leading to TBM in the most general way but leave the three texture zeros of the diagonal charged lepton mass matrix unperturbed. We compare predictions for the perturbed neutrino TBM parameters with those obtained from typical SO(10) grand unified theories with a variety of flavor symmetries. Whereas SO(10) GUTs almost always predict a normal mass hierarchy for the light neutrinos, TBM has a priori no preference for neutrino masses. We find, in particular for the latter, that the value of |U{sub e3}| is very sensitive to the neutrino mass scale and ordering. Observation of |U{sub e3}|{sup 2} > 0.001 to 0.01 within the next few years would be incompatible with softly-broken TBM and a normal mass hierarchy and would suggest that the apparent TBM symmetry is an accidental symmetry instead. No such conclusions can be drawn for the inverted and quasi-degenerate hierarchy spectra.

  9. Image processing applications in NDE

    SciTech Connect (OSTI)

    Morris, R.A.

    1980-01-01T23:59:59.000Z

    Nondestructive examination (NDE) can be defined as a technique or collection of techniques that permits one to determine some property of a material or object without damaging the object. There are a large number of such techniques and most of them use visual imaging in one form or another. They vary from holographic interferometry where displacements under stress are measured to the visual inspection of an objects surface to detect cracks after penetrant has been applied. The use of image processing techniques on the images produced by NDE is relatively new and can be divided into three general categories: classical image enhancement; mensuration techniques; and quantitative sensitometry. An example is discussed of how image processing techniques are used to nondestructively and destructively test the product throughout its life cycle. The product that will be followed is the microballoon target used in the laser fusion program. The laser target is a small (50 to 100 ..mu..m - dia) glass sphere with typical wall thickness of 0.5 to 6 ..mu..m. The sphere may be used as is or may be given a number of coatings of any number of materials. The beads are mass produced by the millions and the first nondestructive test is to separate the obviously bad beads (broken or incomplete) from the good ones. After this has been done, the good beads must be inspected for spherocity and wall thickness uniformity. The microradiography of the glass, uncoated bead is performed on a specially designed low-energy x-ray machine. The beads are mounted in a special jig and placed on a Kodak high resolution plate in a vacuum chamber that contains the x-ray source. The x-ray image is made with an energy less that 2 keV and the resulting images are then inspected at a magnification of 500 to 1000X. Some typical results are presented.

  10. O N E The World Economy Is Broken It is clear that the world economy is in a mess. Since its collapse in

    E-Print Network [OSTI]

    Landweber, Laura

    O N E The World Economy Is Broken It is clear that the world economy is in a mess. Since its collapse in the autumn of 2008, the world economy has gone through three distinct phases. It contracted the past four years has been immense. The world economy is 10 percent poorer than it would have been had

  11. Test Images

    E-Print Network [OSTI]

    Test Images. I hope to have a set of test images for the course soon. Some images are available now; some will have to wait until I can find another 100-200

  12. Image Analysis

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Recognition Image Analysis and Recognition Snapshot1498121slicesqResedison Fibers permeating imaged material (Courtesy: Bale, Loring, Perciano and Ushizima) Imagery coming from...

  13. People Images

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    People Images People Images Several hundred of the 1700 U.S. scientists contributing to the LHC accelerator and experiments gathered in June 2008 in CERN's building 40 CE0252 Joel...

  14. Please note: This is a comprehensive list of websites used but not developed by UCS. If you notice any broken sites or problems please email internship@northwestern.edu

    E-Print Network [OSTI]

    Shull, Kenneth R.

    broken sites or problems please email internship@northwestern.edu American Advertising Federation http://www.aaf://www.nywici.org/students/internships-available Business (Consulting, Analyst, Finance): Careers in Business http

  15. Image alignment

    DOE Patents [OSTI]

    Dowell, Larry Jonathan

    2014-04-22T23:59:59.000Z

    Disclosed is a method and device for aligning at least two digital images. An embodiment may use frequency-domain transforms of small tiles created from each image to identify substantially similar, "distinguishing" features within each of the images, and then align the images together based on the location of the distinguishing features. To accomplish this, an embodiment may create equal sized tile sub-images for each image. A "key" for each tile may be created by performing a frequency-domain transform calculation on each tile. A information-distance difference between each possible pair of tiles on each image may be calculated to identify distinguishing features. From analysis of the information-distance differences of the pairs of tiles, a subset of tiles with high discrimination metrics in relation to other tiles may be located for each image. The subset of distinguishing tiles for each image may then be compared to locate tiles with substantially similar keys and/or information-distance metrics to other tiles of other images. Once similar tiles are located for each image, the images may be aligned in relation to the identified similar tiles.

  16. SPIE Medical Imaging Medical Imaging

    E-Print Network [OSTI]

    Miga, Michael I.

    CT and SPECT (GE Hawkeye) SPIE Medical Imaging 2006 28 CT/PET System Combined CT and PET (Siemens Medical Imaging 2006 10 Computed Tomography (CT) 3D Tomography from multiple projections #12;6 SPIE: Scintillation Camera SPIE Medical Imaging 2006 26 PET and SPECT PET = Positron Emission Tomography SPECT

  17. Description and crystal structure of nyholmite, a new mineral related to hureaulite, from Broken Hill, New South Wales, Australia

    SciTech Connect (OSTI)

    Elliott, P.; Turner, P.; Jensen, P.; Kolitsch, U.; Pring, A.; (Naturhistorisches Museum, Austria); (SA Museum); (Adelaide); (Sydney)

    2010-08-12T23:59:59.000Z

    Nyholmite, Cd{sub 3}Zn{sub 2}(AsO{sub 3}OH){sub 2}(AsO{sub 4}){sub 2} {center_dot} 4H{sub 2}O, from the Block 14 Opencut, Broken Hill, New South Wales, Australia, is a new Cd-Zn arsenate species, isostructural with the minerals of the hureaulite group. The mineral occurs in a quartz-garnet-arsenopyrite matrix as white globules, tufted aggregates of fibrous crystals and radiating hemispheres of thin, colourless, bladed crystals. Associated minerals are goldquarryite, lavendulan-sampleite, scorodite-strengite and gypsum. Individual crystals are up to 0.2 mm in length and 0.05 mm across. The mineral is transparent to translucent with a vitreous lustre. It is brittle with an uneven fracture and a white streak. The Mohs hardness is 3-3.5 and the calculated density is 4.23 g cm{sup -3} for the empirical formula. Electron microprobe analyses yielded CdO 34.58, ZnO 9.72, MnO 3.59, CuO 3.39, Al{sub 2}O{sub 3} 0.20, CaO 0.16, PbO 0.37, As{sub 2}O{sub 5} 34.55, P{sub 2}O{sub 5} 6.29 totalling 92.85 wt.%. The empirical formula, based on 20 oxygen atoms, is Ca{sub 0.03}Pb{sub 0.02} Cd{sub 2.80}Al{sub 0.04}Zn{sub 1.24}-Cu{sub 0.44}Mn{sub 0.53}[(AsO{sub 4}){sub 3.13}(PO{sub 4}){sub 0.92}]{Sigma}{sub 4.05}H{sub 1.91} {center_dot} 3.79H{sub 2}O. Nyholmite is monoclinic, C2/c, a = 18.062(4) {angstrom}, b = 9.341(2) {angstrom}, c = 9.844(2) {angstrom}, {beta} = 96.17(3){sup o}, V = 1651.2(6) {angstrom}{sup 3} (single-crystal data, at 123 K). The six strongest lines in the X-ray powder diffraction pattern are [d({angstrom}),I,(hkl)]: 8.985,30,(200); 8.283, 85,(110); 6.169,25,(111); 4.878,25,(002); 3.234,100,(222, 420); 3.079,65,(222, 511); 2.976,45,(113). The crystal structure was solved by Patterson methods and refined using 2045 observed reflections to R1(F) = 3.73%. The structure is characterized by a kinked, five-membered chain of edge-sharing M{phi}{sub 6} ({phi} = unspecified anion) octahedra, or pentamer, that extends in the a direction. The pentamers link by sharing corners to form a sheet in the (001) plane. Pentamers are also linked, via corner-sharing, by (As,P)O{sub 4} groups forming thick slabs in the (001) plane. The slabs link in the c direction by cornersharing between octahedra and tetrahedra to form a dense heteropolyhedral framework. Moderate to weak hydrogen-bonding provides additional linkage between the slabs.

  18. The Goldstone theorem protects naturalness, and the absence of Brout-Englert-Higgs fine-tuning, in spontaneously broken SO(2)

    E-Print Network [OSTI]

    Bryan W. Lynn; Glenn D. Starkman

    2014-11-11T23:59:59.000Z

    The Gell-Mann-Levy (GML), Schwinger and Standard Models were previously shown to lack a Brout-Englert-Higgs (BEH) fine-tuning problem due to quadratic divergences, with finite Euclidean cut-off \\Lambda, because of the symmetries obeyed by all O(\\Lambda^2) contributions. We extend those results to finite contributions from certain M_{Heavy}^2>> m_{BEH}^2 particles in SO(2) versions of GML and Schwinger. We demonstrate explicit 1-loop physical naturalness for two SO(2) singlet examples: a heavy real scalar S and a right-handed Type 1 see-saw Majorana neutrino. We prove that for low |q^2| the heavy degrees of freedom contribute, at worst, marginal operators in spontaneously broken SO(2) Schwinger. The key GML lesson from these examples is that the pseudo Nambu-Goldstone boson (NGB) mass-squared must be properly renormalized. A true NGB value, m_3^2 = 0, is then protected by the Goldstone theorem. For the Schwinger model, two crucial observations emerge: global Ward-Takahashi identities (WTI) force all relevant operators into the pseudo-NGB mass-squared; and WTI enforce the Goldstone theorem by forbidding all relevant operator contributions in the spontaneously broken Goldstone mode, \\pi_3 is a massless NGB there. Goldstone mode, with weak-scale m_{BEH}^2 \\& ^2, is not-fine-tuned even as a low-energy effective theory with certain high-mass-scale extensions. Its "Goldstone Exceptional Naturalness (GEN)," where all relevant operators vanish, a powerful suppression of fine-tuning, is simply another (albeit un-familiar) consequence of WTI, spontaneous symmetry breaking and the Goldstone theorem. If GEN can somehow be extended to the Standard Model (SM), there should be no expectation that LHC will discover any Beyond the SM physics unrelated to neutrino mixing, i.e. the only known experimentally necessary modification of the Standard Model plus General Relativity paradigm.

  19. Hyperspectral Imaging or Imaging Spectroscopy

    E-Print Network [OSTI]

    Gilbes, Fernando

    (nm) Cosmic Rays Gamma Rays X Rays Microwaves (Radar) Radio & Television WavesUV 105 106 107 108 109 the image cube by scanning through it. The conventional methods are whiskbroom (a), filter/Fourier transform Optics Scene FOVx X-Dimension Scanning Mechanism Focusing Optics #12;Whiskbroom Sensor Accumulation

  20. Imaging bolometer

    DOE Patents [OSTI]

    Wurden, Glen A. (Los Alamos, NM)

    1999-01-01T23:59:59.000Z

    Radiation-hard, steady-state imaging bolometer. A bolometer employing infrared (IR) imaging of a segmented-matrix absorber of plasma radiation in a cooled-pinhole camera geometry is described. The bolometer design parameters are determined by modeling the temperature of the foils from which the absorbing matrix is fabricated by using a two-dimensional time-dependent solution of the heat conduction equation. The resulting design will give a steady-state bolometry capability, with approximately 100 Hz time resolution, while simultaneously providing hundreds of channels of spatial information. No wiring harnesses will be required, as the temperature-rise data will be measured via an IR camera. The resulting spatial data may be used to tomographically investigate the profile of plasmas.

  1. Imaging bolometer

    DOE Patents [OSTI]

    Wurden, G.A.

    1999-01-19T23:59:59.000Z

    Radiation-hard, steady-state imaging bolometer is disclosed. A bolometer employing infrared (IR) imaging of a segmented-matrix absorber of plasma radiation in a cooled-pinhole camera geometry is described. The bolometer design parameters are determined by modeling the temperature of the foils from which the absorbing matrix is fabricated by using a two-dimensional time-dependent solution of the heat conduction equation. The resulting design will give a steady-state bolometry capability, with approximately 100 Hz time resolution, while simultaneously providing hundreds of channels of spatial information. No wiring harnesses will be required, as the temperature-rise data will be measured via an IR camera. The resulting spatial data may be used to tomographically investigate the profile of plasmas. 2 figs.

  2. Lensless imaging

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5 -ofLearningLensless4 Lensless Imaging of

  3. Femtosecond Transient Imaging

    E-Print Network [OSTI]

    Kirmani, Ahmed (Ghulam Ahmed)

    2010-01-01T23:59:59.000Z

    This thesis proposes a novel framework called transient imaging for image formation and scene understanding through impulse illumination and time images. Using time-of-flight cameras and multi-path analysis of global light ...

  4. Imaging Sciences Workshop Proceedings

    SciTech Connect (OSTI)

    Candy, J.V.

    1996-11-21T23:59:59.000Z

    This report contains the proceedings of the Imaging Sciences Workshop sponsored by C.A.S.LS., the Center for Advanced Signal & Image Sciences. The Center, established primarily to provide a forum where researchers can freely exchange ideas on the signal and image sciences in a comfortable intellectual environment, has grown over the last two years with the opening of a Reference Library (located in Building 272). The Technical Program for the 1996 Workshop include a variety of efforts in the Imaging Sciences including applications in the Microwave Imaging, highlighted by the Micro-Impulse Radar (MIR) system invented at LLNL, as well as other applications in this area. Special sessions organized by various individuals in Speech, Acoustic Ocean Imaging, Radar Ocean Imaging, Ultrasonic Imaging, and Optical Imaging discuss various applica- tions of real world problems. For the more theoretical, sessions on Imaging Algorithms and Computed Tomography were organized as well as for the more pragmatic featuring a session on Imaging Systems.

  5. Seismic Imaging and Monitoring

    SciTech Connect (OSTI)

    Huang, Lianjie [Los Alamos National Laboratory

    2012-07-09T23:59:59.000Z

    I give an overview of LANL's capability in seismic imaging and monitoring. I present some seismic imaging and monitoring results, including imaging of complex structures, subsalt imaging of Gulf of Mexico, fault/fracture zone imaging for geothermal exploration at the Jemez pueblo, time-lapse imaging of a walkway vertical seismic profiling data for monitoring CO{sub 2} inject at SACROC, and microseismic event locations for monitoring CO{sub 2} injection at Aneth. These examples demonstrate LANL's high-resolution and high-fidelity seismic imaging and monitoring capabilities.

  6. User Science Images

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Image: OBrianImageBig.png | png | 5 MB SlavaFull.png FES: Small Scale Experimental Plasma Research October 21, 2010 | Author(s): Vyacheslav Lukin (NRL) | Category: Fusion Energy |...

  7. Imaging in radiotherapy

    SciTech Connect (OSTI)

    Taylor, J.

    1987-01-01T23:59:59.000Z

    The text contains details of recording media, image quality, sensitometry, processing and equipment used in radiotherapy for imaging. It reflects part of the syllabus for the College of Radiographers.

  8. Consumers' Image of Broilers.

    E-Print Network [OSTI]

    Courtenay, Henry V.; Branson, Robert E.

    1962-01-01T23:59:59.000Z

    which they feel the product possesses. This research was designed to determine consumers' favorable and unfavorable images as to broilers, both in making purchases in stores and in serving them as a meat dish. These images, summarized briefly here... count. The Preparation and Cooking Image: The h0u.l wife's image of broilers focuses on one metliotl- frying. The major deterrent to preparing othci dishes was that these are either too difficult or canno* be prepared satisfactorily...

  9. Imaging with Scattered Neutrons

    E-Print Network [OSTI]

    H. Ballhausen; H. Abele; R. Gaehler; M. Trapp; A. Van Overberghe

    2006-10-30T23:59:59.000Z

    We describe a novel experimental technique for neutron imaging with scattered neutrons. These scattered neutrons are of interest for condensed matter physics, because they permit to reveal the local distribution of incoherent and coherent scattering within a sample. In contrast to standard attenuation based imaging, scattered neutron imaging distinguishes between the scattering cross section and the total attenuation cross section including absorption. First successful low-noise millimeter-resolution images by scattered neutron radiography and tomography are presented.

  10. Near-electrode imager

    DOE Patents [OSTI]

    Rathke, Jerome W. (Lockport, IL); Klingler, Robert J. (Westmont, IL); Woelk, Klaus (Wachtberg, DE); Gerald, II, Rex E. (Brookfield, IL)

    2000-01-01T23:59:59.000Z

    An apparatus, near-electrode imager, for employing nuclear magnetic resonance imaging to provide in situ measurements of electrochemical properties of a sample as a function of distance from a working electrode. The near-electrode imager uses the radio frequency field gradient within a cylindrical toroid cavity resonator to provide high-resolution nuclear magnetic resonance spectral information on electrolyte materials.

  11. Human Functional Brain Imaging

    E-Print Network [OSTI]

    Rambaut, Andrew

    Human Functional Brain Imaging 1990­2009 September 2011 Portfolio Review #12;2 | Portfolio Review: Human Functional Brain ImagingThe Wellcome Trust is a charity registered in England and Wales, no's role in supporting human functional brain imaging and have informed `our' speculations for the future

  12. Human Functional Brain Imaging

    E-Print Network [OSTI]

    Rambaut, Andrew

    Human Functional Brain Imaging 1990­2009 September 2011 Portfolio Review Summary Brain Imaging #12 Dale ­ one of our first Trustees. Understanding the brain remains one of our key strategic aims today three-fold: · to identify the key landmarks and influences on the human functional brain imaging

  13. Medical imaging systems

    DOE Patents [OSTI]

    Frangioni, John V

    2013-06-25T23:59:59.000Z

    A medical imaging system provides simultaneous rendering of visible light and diagnostic or functional images. The system may be portable, and may include adapters for connecting various light sources and cameras in open surgical environments or laparascopic or endoscopic environments. A user interface provides control over the functionality of the integrated imaging system. In one embodiment, the system provides a tool for surgical pathology.

  14. Magnetic Imaging Wolfgang Kuch

    E-Print Network [OSTI]

    Kuch, Wolfgang

    Magnetic Imaging Wolfgang Kuch Freie Universit¨at Berlin, Institut f¨ur Experimentalphysik, Arnimallee 14, 14195 Berlin, Germany kuch@physik.fu-berlin.de Abstract. Imaging of magnetic domains has- ern techniques is used nowadays routinely for magnetic imaging of magnetic ma- terials

  15. Automation in image cytometry : continuous HCS and kinetic image cytometry

    E-Print Network [OSTI]

    Charlot, David J.

    2012-01-01T23:59:59.000Z

    OF CALIFORNIA, SAN DIEGO Automation in Image Cytometry:xiv Abstract of Dissertation Automation in Image Cytometry:

  16. Video Toroid Cavity Imager

    DOE Patents [OSTI]

    Gerald, Rex E. II; Sanchez, Jairo; Rathke, Jerome W.

    2004-08-10T23:59:59.000Z

    A video toroid cavity imager for in situ measurement of electrochemical properties of an electrolytic material sample includes a cylindrical toroid cavity resonator containing the sample and employs NMR and video imaging for providing high-resolution spectral and visual information of molecular characteristics of the sample on a real-time basis. A large magnetic field is applied to the sample under controlled temperature and pressure conditions to simultaneously provide NMR spectroscopy and video imaging capabilities for investigating electrochemical transformations of materials or the evolution of long-range molecular aggregation during cooling of hydrocarbon melts. The video toroid cavity imager includes a miniature commercial video camera with an adjustable lens, a modified compression coin cell imager with a fiat circular principal detector element, and a sample mounted on a transparent circular glass disk, and provides NMR information as well as a video image of a sample, such as a polymer film, with micrometer resolution.

  17. Quantitative luminescence imaging system

    DOE Patents [OSTI]

    Erwin, D.N.; Kiel, J.L.; Batishko, C.R.; Stahl, K.A.

    1990-08-14T23:59:59.000Z

    The QLIS images and quantifies low-level chemiluminescent reactions in an electromagnetic field. It is capable of real time nonperturbing measurement and simultaneous recording of many biochemical and chemical reactions such as luminescent immunoassays or enzyme assays. The system comprises image transfer optics, a low-light level digitizing camera with image intensifying microchannel plates, an image process or, and a control computer. The image transfer optics may be a fiber image guide with a bend, or a microscope, to take the light outside of the RF field. Output of the camera is transformed into a localized rate of cumulative digitalized data or enhanced video display or hard-copy images. The system may be used as a luminescent microdosimetry device for radiofrequency or microwave radiation, as a thermal dosimeter, or in the dosimetry of ultra-sound (sonoluminescence) or ionizing radiation. It provides a near-real-time system capable of measuring the extremely low light levels from luminescent reactions in electromagnetic fields in the areas of chemiluminescence assays and thermal microdosimetry, and is capable of near-real-time imaging of the sample to allow spatial distribution analysis of the reaction. It can be used to instrument three distinctly different irradiation configurations, comprising (1) RF waveguide irradiation of a small Petri-dish-shaped sample cell, (2) RF irradiation of samples in a microscope for the microscopic imaging and measurement, and (3) RF irradiation of small to human body-sized samples in an anechoic chamber. 22 figs.

  18. Quantitative luminescence imaging system

    DOE Patents [OSTI]

    Erwin, David N. (San Antonio, TX); Kiel, Johnathan L. (San Antonio, TX); Batishko, Charles R. (West Richland, WA); Stahl, Kurt A. (Richland, WA)

    1990-01-01T23:59:59.000Z

    The QLIS images and quantifies low-level chemiluminescent reactions in an electromagnetic field. It is capable of real time nonperturbing measurement and simultaneous recording of many biochemical and chemical reactions such as luminescent immunoassays or enzyme assays. The system comprises image transfer optics, a low-light level digitizing camera with image intensifying microchannel plates, an image process or, and a control computer. The image transfer optics may be a fiber image guide with a bend, or a microscope, to take the light outside of the RF field. Output of the camera is transformed into a localized rate of cumulative digitalized data or enhanced video display or hard-copy images. The system may be used as a luminescent microdosimetry device for radiofrequency or microwave radiation, as a thermal dosimeter, or in the dosimetry of ultra-sound (sonoluminescence) or ionizing radiation. It provides a near-real-time system capable of measuring the extremely low light levels from luminescent reactions in electromagnetic fields in the areas of chemiluminescence assays and thermal microdosimetry, and is capable of near-real-time imaging of the sample to allow spatial distribution analysis of the reaction. It can be used to instrument three distinctly different irradiation configurations, comprising (1) RF waveguide irradiation of a small Petri-dish-shaped sample cell, (2) RF irradiation of samples in a microscope for the microscopie imaging and measurement, and (3) RF irradiation of small to human body-sized samples in an anechoic chamber.

  19. BNL | ICS Imaging

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    due to the phase-contrast effect. This method will be useful for quantitative computed tomography applications of Thomson sources. High-resolution radiographic image of a wasp...

  20. Ferroelectric optical image comparator

    DOE Patents [OSTI]

    Butler, M.A.; Land, C.E.; Martin, S.J.; Pfeifer, K.B.

    1993-11-30T23:59:59.000Z

    A ferroelectric optical image comparator has a lead lanthanum zirconate titanate thin-film device which is constructed with a semi-transparent or transparent conductive first electrode on one side of the thin film, a conductive metal second electrode on the other side of the thin film, and the second electrode is in contact with a nonconducting substrate. A photoinduced current in the device represents the dot product between a stored image and an image projected onto the first electrode. One-dimensional autocorrelations are performed by measuring this current while displacing the projected image. 7 figures.

  1. Restoring functional PET Images using Anatomical MR Images

    E-Print Network [OSTI]

    Mosegaard, Klaus

    Restoring functional PET Images using Anatomical MR Images Peter Philipsen, Ulrik Kjems, Peter Toft signal to noise ratio and the low spa­ tial resolution in Positron Emission Tomography (PET) images ? And Positron Emission Tomography (PET) Images? ffl Segmentation of MR Images ­ Extraction of important edges

  2. Compression of Computer Graphics Images with Image-Based Rendering

    E-Print Network [OSTI]

    Shahabi, Cyrus

    Compression of Computer Graphics Images with Image-Based Rendering Ilmi Yoon and Ulrich Neumann information from previously rendered images. Images predicted from prior images are combined with a residual-based rendering tech- nique provides accurate motion prediction and accelerates rendering at the same time

  3. Adaptive wiener image restoration kernel

    DOE Patents [OSTI]

    Yuan, Ding (Henderson, NV)

    2007-06-05T23:59:59.000Z

    A method and device for restoration of electro-optical image data using an adaptive Wiener filter begins with constructing imaging system Optical Transfer Function, and the Fourier Transformations of the noise and the image. A spatial representation of the imaged object is restored by spatial convolution of the image using a Wiener restoration kernel.

  4. Scandinavian Workshop on Imaging

    E-Print Network [OSTI]

    Mosegaard, Klaus

    Barcode Imaging of Chocolate Milk Quan.fica.on of Microstructures in Freeze.on of Fat Content in Raw Beef Cut Meat Evalua.on by RGB-to-spectrum Imaging.on to Visualizing Meat Products Characteriza.on of Commercial Danish Apple Cul.var Using Novel

  5. Heart imaging method

    DOE Patents [OSTI]

    Collins, H. Dale (Richland, WA); Gribble, R. Parks (Richland, WA); Busse, Lawrence J. (Littleton, CO)

    1991-01-01T23:59:59.000Z

    A method for providing an image of the human heart's electrical system derives time-of-flight data from an array of EKG electrodes and this data is transformed into phase information. The phase information, treated as a hologram, is reconstructed to provide an image in one or two dimensions of the electrical system of the functioning heart.

  6. DOUBLE MAJORS Imaging Science + ...

    E-Print Network [OSTI]

    Zanibbi, Richard

    DOUBLE MAJORS Imaging Science + ... Applied Mathematics Biomedical Sciences Computer Science Undergraduate Research Internships and Cooperative Education (Co-op) (optional) Study Abroad WHY IMAGING SCIENCE Science: BS, MS, PhD Color Science: MS, PhD BS + MS/PhD Combos HUMAN VISION BIO- MEDICAL ASTRO- PHYSICS

  7. Fluorescent image tracking velocimeter

    DOE Patents [OSTI]

    Shaffer, Franklin D. (Library, PA)

    1994-01-01T23:59:59.000Z

    A multiple-exposure fluorescent image tracking velocimeter (FITV) detects and measures the motion (trajectory, direction and velocity) of small particles close to light scattering surfaces. The small particles may follow the motion of a carrier medium such as a liquid, gas or multi-phase mixture, allowing the motion of the carrier medium to be observed, measured and recorded. The main components of the FITV include: (1) fluorescent particles; (2) a pulsed fluorescent excitation laser source; (3) an imaging camera; and (4) an image analyzer. FITV uses fluorescing particles excited by visible laser light to enhance particle image detectability near light scattering surfaces. The excitation laser light is filtered out before reaching the imaging camera allowing the fluoresced wavelengths emitted by the particles to be detected and recorded by the camera. FITV employs multiple exposures of a single camera image by pulsing the excitation laser light for producing a series of images of each particle along its trajectory. The time-lapsed image may be used to determine trajectory and velocity and the exposures may be coded to derive directional information.

  8. Medical imaging systems

    DOE Patents [OSTI]

    Frangioni, John V. (Wayland, MA)

    2012-07-24T23:59:59.000Z

    A medical imaging system provides simultaneous rendering of visible light and fluorescent images. The system may employ dyes in a small-molecule form that remains in a subject's blood stream for several minutes, allowing real-time imaging of the subject's circulatory system superimposed upon a conventional, visible light image of the subject. The system may also employ dyes or other fluorescent substances associated with antibodies, antibody fragments, or ligands that accumulate within a region of diagnostic significance. In one embodiment, the system provides an excitation light source to excite the fluorescent substance and a visible light source for general illumination within the same optical guide that is used to capture images. In another embodiment, the system is configured for use in open surgical procedures by providing an operating area that is closed to ambient light. More broadly, the systems described herein may be used in imaging applications where a visible light image may be usefully supplemented by an image formed from fluorescent emissions from a fluorescent substance that marks areas of functional interest.

  9. Time encoded radiation imaging

    DOE Patents [OSTI]

    Marleau, Peter; Brubaker, Erik; Kiff, Scott

    2014-10-21T23:59:59.000Z

    The various technologies presented herein relate to detecting nuclear material at a large stand-off distance. An imaging system is presented which can detect nuclear material by utilizing time encoded imaging relating to maximum and minimum radiation particle counts rates. The imaging system is integrated with a data acquisition system that can utilize variations in photon pulse shape to discriminate between neutron and gamma-ray interactions. Modulation in the detected neutron count rates as a function of the angular orientation of the detector due to attenuation of neighboring detectors is utilized to reconstruct the neutron source distribution over 360 degrees around the imaging system. Neutrons (e.g., fast neutrons) and/or gamma-rays are incident upon scintillation material in the imager, the photons generated by the scintillation material are converted to electrical energy from which the respective neutrons/gamma rays can be determined and, accordingly, a direction to, and the location of, a radiation source identified.

  10. Confocal coded aperture imaging

    DOE Patents [OSTI]

    Tobin, Jr., Kenneth William (Harriman, TN); Thomas, Jr., Clarence E. (Knoxville, TN)

    2001-01-01T23:59:59.000Z

    A method for imaging a target volume comprises the steps of: radiating a small bandwidth of energy toward the target volume; focusing the small bandwidth of energy into a beam; moving the target volume through a plurality of positions within the focused beam; collecting a beam of energy scattered from the target volume with a non-diffractive confocal coded aperture; generating a shadow image of said aperture from every point source of radiation in the target volume; and, reconstructing the shadow image into a 3-dimensional image of the every point source by mathematically correlating the shadow image with a digital or analog version of the coded aperture. The method can comprise the step of collecting the beam of energy scattered from the target volume with a Fresnel zone plate.

  11. Sandia National Laboratories: CSP Images & Videos

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Images & Videos CSP Images & Videos Image Gallery Videos Concentrating Solar Power Image Gallery A picture says a thousand words, especially on the World Wide Web. Both Sandia...

  12. Ghost Imaging with Blackbody Radiation

    E-Print Network [OSTI]

    Yangjian Cai; Shiyao Zhu

    2004-07-29T23:59:59.000Z

    We present a theoretical study of ghost imaging by using blackbody radiation source. A Gaussian thin lens equation for the ghost imaging, which depends on both paths, is derived. The dependences of the visibility and quality of the image on the transverse size and temperature of the blackbody are studied. The main differences between the ghost imaging by using the blackbody radiation and by using the entangled photon pairs are image-forming equation, and the visibility and quality of the image

  13. Scanning computed confocal imager

    DOE Patents [OSTI]

    George, John S. (Los Alamos, NM)

    2000-03-14T23:59:59.000Z

    There is provided a confocal imager comprising a light source emitting a light, with a light modulator in optical communication with the light source for varying the spatial and temporal pattern of the light. A beam splitter receives the scanned light and direct the scanned light onto a target and pass light reflected from the target to a video capturing device for receiving the reflected light and transferring a digital image of the reflected light to a computer for creating a virtual aperture and outputting the digital image. In a transmissive mode of operation the invention omits the beam splitter means and captures light passed through the target.

  14. Nuclear medicine imaging system

    DOE Patents [OSTI]

    Bennett, G.W.; Brill, A.B.; Bizais, Y.J.C.; Rowe, R.W.; Zubal, I.G.

    1983-03-11T23:59:59.000Z

    It is an object of this invention to provide a nuclear imaging system having the versatility to do positron annihilation studies, rotating single or opposed camera gamma emission studies, and orthogonal gamma emission studies. It is a further object of this invention to provide an imaging system having the capability for orthogonal dual multipinhole tomography. It is another object of this invention to provide a nuclear imaging system in which all available energy data, as well as patient physiological data, are acquired simultaneously in list mode.

  15. Image portion identification methods, image parsing methods, image parsing systems, and articles of manufacture

    DOE Patents [OSTI]

    Lassahn, Gordon D.; Lancaster, Gregory D.; Apel, William A.; Thompson, Vicki S.

    2013-01-08T23:59:59.000Z

    Image portion identification methods, image parsing methods, image parsing systems, and articles of manufacture are described. According to one embodiment, an image portion identification method includes accessing data regarding an image depicting a plurality of biological substrates corresponding to at least one biological sample and indicating presence of at least one biological indicator within the biological sample and, using processing circuitry, automatically identifying a portion of the image depicting one of the biological substrates but not others of the biological substrates.

  16. Image Content Engine (ICE)

    SciTech Connect (OSTI)

    Brase, J M

    2007-03-26T23:59:59.000Z

    The Image Content Engine (ICE) is being developed to provide cueing assistance to human image analysts faced with increasingly large and intractable amounts of image data. The ICE architecture includes user configurable feature extraction pipelines which produce intermediate feature vector and match surface files which can then be accessed by interactive relational queries. Application of the feature extraction algorithms to large collections of images may be extremely time consuming and is launched as a batch job on a Linux cluster. The query interface accesses only the intermediate files and returns candidate hits nearly instantaneously. Queries may be posed for individual objects or collections. The query interface prompts the user for feedback, and applies relevance feedback algorithms to revise the feature vector weighting and focus on relevant search results. Examples of feature extraction and both model-based and search-by-example queries are presented.

  17. Overview of Image Reconstruction

    SciTech Connect (OSTI)

    Marr, R.B.

    1980-04-01T23:59:59.000Z

    Image reconstruction (or computerized tomography, etc.) is any process whereby a function, f, on Rn is estimated from empirical data pertaining to its integrals, ∫f(x) dx, for some collection of hyperplanes of dimension k < n. The paper begins with background information on how image reconstruction problems have arisen in practice, and describes some of the application areas of past or current interest; these include radioastronomy, optics, radiology and nuclear medicine, electron microscopy, acoustical imaging, geophysical tomography, nondestructive testing, and NMR zeugmatography. Then the various reconstruction algorithms are discussed in five classes: summation, or simple back-projection; convolution, or filtered back-projection; Fourier and other functional transforms; orthogonal function series expansion; and iterative methods. Certain more technical mathematical aspects of image reconstruction are considered from the standpoint of uniqueness, consistency, and stability of solution. The paper concludes by presenting certain open problems. 73 references. (RWR)

  18. Photothermal imaging scanning microscopy

    DOE Patents [OSTI]

    Chinn, Diane (Pleasanton, CA); Stolz, Christopher J. (Lathrop, CA); Wu, Zhouling (Pleasanton, CA); Huber, Robert (Discovery Bay, CA); Weinzapfel, Carolyn (Tracy, CA)

    2006-07-11T23:59:59.000Z

    Photothermal Imaging Scanning Microscopy produces a rapid, thermal-based, non-destructive characterization apparatus. Also, a photothermal characterization method of surface and subsurface features includes micron and nanoscale spatial resolution of meter-sized optical materials.

  19. Restoring functional PET Images using Anatomical MR Images

    E-Print Network [OSTI]

    Mosegaard, Klaus

    Restoring functional PET Images using Anatomical MR Images Peter Alshede Philipsen, Ulrik Kjems,uk,pto,lkh@imm.dtu.dk Abstract In this paper we present a Bayesian method to enhance functional 3D PET images using apriori as a true PET­MR result, and further more show how to obtain the desired information from the MR images. 1

  20. Reflective optical imaging system

    DOE Patents [OSTI]

    Shafer, David R. (Fairfield, CT)

    2000-01-01T23:59:59.000Z

    An optical system compatible with short wavelength (extreme ultraviolet) radiation comprising four reflective elements for projecting a mask image onto a substrate. The four optical elements are characterized in order from object to image as convex, concave, convex and concave mirrors. The optical system is particularly suited for step and scan lithography methods. The invention increases the slit dimensions associated with ringfield scanning optics, improves wafer throughput and allows higher semiconductor device density.

  1. BAYESIAN ENSEMBLE LEARNING FOR MEDICAL IMAGE DENOISING

    E-Print Network [OSTI]

    Oh, Hyuntaek

    2012-08-31T23:59:59.000Z

    Medical images are often affected by random noise because of both image acquisition from the medical modalities and image transmission from modalities to workspace in the main computer. Medical image denoising removes noise from the CT or MR images...

  2. How Do You Mend a Broken Heart?

    E-Print Network [OSTI]

    Service, Shannon

    2012-01-01T23:59:59.000Z

    hours into our flight to Croatia that I starting worryingcollected and assembled in Croatia’s newly opened Museum oflong hours coordinating Croatia’s biggest film festival; and

  3. How Do You Mend a Broken Heart?

    E-Print Network [OSTI]

    Service, Shannon

    2011-01-01T23:59:59.000Z

    hours into our flight to Croatia that I starting worryingcollected and assembled in Croatia’s newly opened Museum oflong hours coordinating Croatia’s biggest film festival; and

  4. How Do You Mend a Broken Heart?

    E-Print Network [OSTI]

    Service, Shannon

    2011-01-01T23:59:59.000Z

    at the hand made, prosthetic boobs. One droopy breast wass furniture, the lopsided boobs, the glass box filled with a

  5. How Do You Mend a Broken Heart?

    E-Print Network [OSTI]

    Service, Shannon

    2012-01-01T23:59:59.000Z

    at the hand made, prosthetic boobs. One droopy breast wass furniture, the lopsided boobs, the glass box filled with a

  6. Radiatively broken symmetries of nonhierarchical neutrinos

    E-Print Network [OSTI]

    Dighe, Amol; Roy, Probir

    2007-01-01T23:59:59.000Z

    Symmetry-based ideas, such as the quark-lepton complementarity (QLC) principle and the tri-bimaximal mixing (TBM) scheme, have been proposed to explain the observed mixing pattern of neutrinos. We argue that such symmetry relations need to be imposed at a high scale $\\Lambda \\sim 10^{12}$ GeV characterizing the large masses of right-handed neutrinos required to implement the seesaw mechanism. For nonhierarchical neutrinos, renormalisation group evolution down to a laboratory energy scale $\\lambda \\sim 10^3$ GeV tends to radiatively break these symmetries at a significant level and spoil the mixing pattern predicted by them. However, for Majorana neutrinos, suitable constraints on the extra phases $\\alpha_{2,3}$ enable the retention of those high scale mixing patterns at laboratory energies. We examine this issue within the Minimal Supersymmetric Standard Model (MSSM) and demonstrate the fact posited above for two versions of QLC and two versions of TBM. The appropriate constraints are worked out for all these...

  7. Radiatively broken symmetries of nonhierarchical neutrinos

    E-Print Network [OSTI]

    Amol Dighe; Srubabati Goswami; Probir Roy

    2007-09-17T23:59:59.000Z

    Symmetry-based ideas, such as the quark-lepton complementarity (QLC) principle and the tri-bimaximal mixing (TBM) scheme, have been proposed to explain the observed mixing pattern of neutrinos. We argue that such symmetry relations need to be imposed at a high scale $\\Lambda \\sim 10^{12}$ GeV characterizing the large masses of right-handed neutrinos required to implement the seesaw mechanism. For nonhierarchical neutrinos, renormalisation group evolution down to a laboratory energy scale $\\lambda \\sim 10^3$ GeV tends to radiatively break these symmetries at a significant level and spoil the mixing pattern predicted by them. However, for Majorana neutrinos, suitable constraints on the extra phases $\\alpha_{2,3}$ enable the retention of those high scale mixing patterns at laboratory energies. We examine this issue within the Minimal Supersymmetric Standard Model (MSSM) and demonstrate the fact posited above for two versions of QLC and two versions of TBM. The appropriate constraints are worked out for all these four cases. Specifically, a preference for $\\alpha_2 \\approx \\pi$ (i.e. $m_1 \\approx -m_2$) emerges in each case. We also show how a future accurate measurement of $\\theta_{13}$ may enable some discrimination among these four cases in spite of renormalization group evolution.

  8. Broken Bow Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty EditCalifornia:Power LP Biomass Facility Jump to: navigation,Biogen JumpBrockwayBow

  9. Multispectral imaging probe

    DOE Patents [OSTI]

    Sandison, D.R.; Platzbecker, M.R.; Descour, M.R.; Armour, D.L.; Craig, M.J.; Richards-Kortum, R.

    1999-07-27T23:59:59.000Z

    A multispectral imaging probe delivers a range of wavelengths of excitation light to a target and collects a range of expressed light wavelengths. The multispectral imaging probe is adapted for mobile use and use in confined spaces, and is sealed against the effects of hostile environments. The multispectral imaging probe comprises a housing that defines a sealed volume that is substantially sealed from the surrounding environment. A beam splitting device mounts within the sealed volume. Excitation light is directed to the beam splitting device, which directs the excitation light to a target. Expressed light from the target reaches the beam splitting device along a path coaxial with the path traveled by the excitation light from the beam splitting device to the target. The beam splitting device directs expressed light to a collection subsystem for delivery to a detector. 8 figs.

  10. Variable waveband infrared imager

    DOE Patents [OSTI]

    Hunter, Scott R.

    2013-06-11T23:59:59.000Z

    A waveband imager includes an imaging pixel that utilizes photon tunneling with a thermally actuated bimorph structure to convert infrared radiation to visible radiation. Infrared radiation passes through a transparent substrate and is absorbed by a bimorph structure formed with a pixel plate. The absorption generates heat which deflects the bimorph structure and pixel plate towards the substrate and into an evanescent electric field generated by light propagating through the substrate. Penetration of the bimorph structure and pixel plate into the evanescent electric field allows a portion of the visible wavelengths propagating through the substrate to tunnel through the substrate, bimorph structure, and/or pixel plate as visible radiation that is proportional to the intensity of the incident infrared radiation. This converted visible radiation may be superimposed over visible wavelengths passed through the imaging pixel.

  11. Imaging agents for in vivo magnetic resonance and scintigraphic imaging

    DOE Patents [OSTI]

    Engelstad, B.L.; Raymond, K.N.; Huberty, J.P.; White, D.L.

    1991-04-23T23:59:59.000Z

    Methods are provided for in vivo magnetic resonance imaging and/or scintigraphic imaging of a subject using chelated transition metal and lanthanide metal complexes. Novel ligands for these complexes are provided. No Drawings

  12. Time-Encoded Imagers.

    SciTech Connect (OSTI)

    Marleau, Peter; Brubaker, Erik

    2014-11-01T23:59:59.000Z

    This report provides a short overview of the DNN R&D funded project, Time-Encoded Imagers. The project began in FY11 and concluded in FY14. The Project Description below provides the overall motivation and objectives for the project as well as a summary of programmatic direction. It is followed by a short description of each task and the resulting deliverables.

  13. Wavelets in medical imaging

    SciTech Connect (OSTI)

    Zahra, Noor e; Sevindir, Huliya A.; Aslan, Zafar; Siddiqi, A. H. [Sharda University, SET, Department of Electronics and Communication, Knowledge Park 3rd, Gr. Noida (India); University of Kocaeli, Department of Mathematics, 41380 Kocaeli (Turkey); Istanbul Aydin University, Department of Computer Engineering, 34295 Istanbul (Turkey); Sharda University, SET, Department of Mathematics, 32-34 Knowledge Park 3rd, Greater Noida (India)

    2012-07-17T23:59:59.000Z

    The aim of this study is to provide emerging applications of wavelet methods to medical signals and images, such as electrocardiogram, electroencephalogram, functional magnetic resonance imaging, computer tomography, X-ray and mammography. Interpretation of these signals and images are quite important. Nowadays wavelet methods have a significant impact on the science of medical imaging and the diagnosis of disease and screening protocols. Based on our initial investigations, future directions include neurosurgical planning and improved assessment of risk for individual patients, improved assessment and strategies for the treatment of chronic pain, improved seizure localization, and improved understanding of the physiology of neurological disorders. We look ahead to these and other emerging applications as the benefits of this technology become incorporated into current and future patient care. In this chapter by applying Fourier transform and wavelet transform, analysis and denoising of one of the important biomedical signals like EEG is carried out. The presence of rhythm, template matching, and correlation is discussed by various method. Energy of EEG signal is used to detect seizure in an epileptic patient. We have also performed denoising of EEG signals by SWT.

  14. Fundamentals of Image Processing

    E-Print Network [OSTI]

    Erdem, Erkut

    Fourier transform Log power spectrum #12;Review - The Convolution Theorem · The Fourier transform components · Fourier (1807): Periodic functions could be represented as a weighted sum of sines and cosines Image courtesy of Technology Review #12;Review - Fourier Transform We want to understand

  15. \\NeuroImage" Informatics

    E-Print Network [OSTI]

    Nielsen, Finn Ă?rup

    International Neuroimaging Consortium Introduction Author cocitation analysis describes a scienti#12;c #12;eld on data collected by the Institute of Scien- ti#12;c Information among a limited set of key au- thors within a #12;eld. Here we work on data from a single journal (the journal \\NeuroImage") down- loaded from

  16. Efficient MR image reconstruction for compressed MR imaging Junzhou Huang

    E-Print Network [OSTI]

    Huang, Junzhou

    to be very powerful for the MR image reconstruction. First, we decompose the original problem into L1 and TV.V. All rights reserved. 1. Introduction Magnetic Resonance (MR) imaging has been widely used in medical. Computation became the bottleneck that prevented this good model (1) from being used in practical MR image

  17. Efficient MR Image Reconstruction for Compressed MR Imaging

    E-Print Network [OSTI]

    Huang, Junzhou

    demonstrate the superior performance of the proposed algorithm for com- pressed MR image reconstruction. 1 [1][2] show that it is possi- ble to accurately reconstruct the Magnetic Resonance (MR) images from for real MR images. Computation became the bottleneck that prevented this good model (1) from being used

  18. Fluid Imaging of Enhanced Geothermal Systems

    Broader source: Energy.gov (indexed) [DOE]

    for Fluids & Fractures - time lapse MTCSEM for fluid imaging - joint CSEM-MTseismic imaging ??? - use MEQ focal information with EM Imaging ScientificTechnical Approach...

  19. Fourier Analysis of Ghost Imaging

    E-Print Network [OSTI]

    Honglin Liu; Jing Cheng; Yanfeng Bai; Shensheng Han

    2006-09-28T23:59:59.000Z

    Fourier analysis of ghost imaging (FAGI) is proposed in this paper to analyze the properties of ghost imaging with thermal light sources. This new theory is compatible with the general correlation theory of intensity fluctuation and could explain some amazed phenomena. Furthermore we design a series of experiments to verify the new theory and investigate the inherent properties of ghost imaging.

  20. Automated Very Low Magnification Imaging

    E-Print Network [OSTI]

    of the entire available imaging area on the grid. The VLM image can then be used as a reference map of Illinois at Urbana- Champaign, Urbana, IL 61801. A typical TEM specimen grid provides approximately a 2x2 mm area that is available for imaging. In order to identify and locate suitable targets on the grid

  1. Acoustic imaging microscope

    DOE Patents [OSTI]

    Deason, Vance A.; Telschow, Kenneth L.

    2006-10-17T23:59:59.000Z

    An imaging system includes: an object wavefront source and an optical microscope objective all positioned to direct an object wavefront onto an area of a vibrating subject surface encompassed by a field of view of the microscope objective, and to direct a modulated object wavefront reflected from the encompassed surface area through a photorefractive material; and a reference wavefront source and at least one phase modulator all positioned to direct a reference wavefront through the phase modulator and to direct a modulated reference wavefront from the phase modulator through the photorefractive material to interfere with the modulated object wavefront. The photorefractive material has a composition and a position such that interference of the modulated object wavefront and modulated reference wavefront occurs within the photorefractive material, providing a full-field, real-time image signal of the encompassed surface area.

  2. Multimode imaging device

    DOE Patents [OSTI]

    Mihailescu, Lucian; Vetter, Kai M

    2013-08-27T23:59:59.000Z

    Apparatus for detecting and locating a source of gamma rays of energies ranging from 10-20 keV to several MeV's includes plural gamma ray detectors arranged in a generally closed extended array so as to provide Compton scattering imaging and coded aperture imaging simultaneously. First detectors are arranged in a spaced manner about a surface defining the closed extended array which may be in the form a circle, a sphere, a square, a pentagon or higher order polygon. Some of the gamma rays are absorbed by the first detectors closest to the gamma source in Compton scattering, while the photons that go unabsorbed by passing through gaps disposed between adjacent first detectors are incident upon second detectors disposed on the side farthest from the gamma ray source, where the first spaced detectors form a coded aperture array for two or three dimensional gamma ray source detection.

  3. Imaging the Antikythera Mechanism

    SciTech Connect (OSTI)

    Malzbender, Tom (Hewlett Packard Laboratories) [Hewlett Packard Laboratories

    2011-01-12T23:59:59.000Z

    In 1900, a party of sponge divers chanced on the wreck of a Roman merchant vessel between Crete and mainland Greece. It was found to contain numerous ancient Greek treasures, among them a mysterious lump of clay that split open to reveal 'mathematical gears' as it dried out. This object is now known as the Antikythera Mechanism, one of the most enlightening artifacts in terms of revealing the advanced nature of ancient Greek science and technology. In 2005 we travelled to the National Archeological Museum in Athens to apply our Reflectance Imaging methods to the mechanism in the hopes of revealing ancient writing on the device. We were successful, and along with the results of Microfocus CT imaging, we are able to decipher 3000 characters compared with the original 800 known. This lead to an understanding that the device was a mechanical, astronomical computer from 150 B.C.E. capable of predicting solar and lunar eclipses along with other celestial events. This talk will overview both the imaging methods as well as what they reveal about the Antikythera Mechanism.

  4. Fiducial marker for correlating images

    DOE Patents [OSTI]

    Miller, Lisa Marie (Rocky Point, NY); Smith, Randy J. (Wading River, NY); Warren, John B. (Port Jefferson, NY); Elliott, Donald (Hampton Bays, NY)

    2011-06-21T23:59:59.000Z

    The invention relates to a fiducial marker having a marking grid that is used to correlate and view images produced by different imaging modalities or different imaging and viewing modalities. More specifically, the invention relates to the fiducial marking grid that has a grid pattern for producing either a viewing image and/or a first analytical image that can be overlaid with at least one other second analytical image in order to view a light path or to image different imaging modalities. Depending on the analysis, the grid pattern has a single layer of a certain thickness or at least two layers of certain thicknesses. In either case, the grid pattern is imageable by each imaging or viewing modality used in the analysis. Further, when viewing a light path, the light path of the analytical modality cannot be visualized by viewing modality (e.g., a light microscope objective). By correlating these images, the ability to analyze a thin sample that is, for example, biological in nature but yet contains trace metal ions is enhanced. Specifically, it is desired to analyze both the organic matter of the biological sample and the trace metal ions contained within the biological sample without adding or using extrinsic labels or stains.

  5. Speckle-free laser imaging

    E-Print Network [OSTI]

    Redding, Brandon; Cao, Hui

    2011-01-01T23:59:59.000Z

    Many imaging applications require increasingly bright illumination sources, motivating the replacement of conventional thermal light sources with light emitting diodes (LEDs), superluminescent diodes (SLDs) and lasers. Despite their brightness, lasers and SLDs are poorly suited for full-field imaging applications because their high spatial coherence leads to coherent artifacts known as speckle that corrupt image formation. We recently demonstrated that random lasers can be engineered to provide low spatial coherence. Here, we exploit the low spatial coherence of specifically-designed random lasers to perform speckle-free full-field imaging in the setting of significant optical scattering. We quantitatively demonstrate that images generated with random laser illumination exhibit higher resolution than images generated with spatially coherent illumination. By providing intense laser illumination without the drawback of coherent artifacts, random lasers are well suited for a host of full-field imaging applicatio...

  6. Bistatic SAR: Imagery & Image Products.

    SciTech Connect (OSTI)

    Yocky, David A.; Wahl, Daniel E.; Jakowatz, Charles V,

    2014-10-01T23:59:59.000Z

    While typical SAR imaging employs a co-located (monostatic) RADAR transmitter and receiver, bistatic SAR imaging separates the transmitter and receiver locations. The transmitter and receiver geometry determines if the scattered signal is back scatter, forward scatter, or side scatter. The monostatic SAR image is backscatter. Therefore, depending on the transmitter/receiver collection geometry, the captured imagery may be quite different that that sensed at the monostatic SAR. This document presents imagery and image products formed from captured signals during the validation stage of the bistatic SAR research. Image quality and image characteristics are discussed first. Then image products such as two-color multi-view (2CMV) and coherent change detection (CCD) are presented.

  7. Staring 2-D hadamard transform spectral imager

    DOE Patents [OSTI]

    Gentry, Stephen M. (Albuquerque, NM); Wehlburg, Christine M. (Albuquerque, NM); Wehlburg, Joseph C. (Albuquerque, NM); Smith, Mark W. (Albuquerque, NM); Smith, Jody L. (Albuquerque, NM)

    2006-02-07T23:59:59.000Z

    A staring imaging system inputs a 2D spatial image containing multi-frequency spectral information. This image is encoded in one dimension of the image with a cyclic Hadamarid S-matrix. The resulting image is detecting with a spatial 2D detector; and a computer applies a Hadamard transform to recover the encoded image.

  8. Device for wavelength-selective imaging

    DOE Patents [OSTI]

    Frangioni, John V. (Wayland, MA)

    2010-09-14T23:59:59.000Z

    An imaging device captures both a visible light image and a diagnostic image, the diagnostic image corresponding to emissions from an imaging medium within the object. The visible light image (which may be color or grayscale) and the diagnostic image may be superimposed to display regions of diagnostic significance within a visible light image. A number of imaging media may be used according to an intended application for the imaging device, and an imaging medium may have wavelengths above, below, or within the visible light spectrum. The devices described herein may be advantageously packaged within a single integrated device or other solid state device, and/or employed in an integrated, single-camera medical imaging system, as well as many non-medical imaging systems that would benefit from simultaneous capture of visible-light wavelength images along with images at other wavelengths.

  9. Associated particle imaging (API)

    SciTech Connect (OSTI)

    NONE

    1998-05-01T23:59:59.000Z

    Associated Particle Imaging (API) is an active neutron probe technique that provides a 3-D image with elemental composition of the material under interrogation, and so occupies a unique niche in the interrogation of unknown objects. The highly penetrating nature of neutrons enables API to provide detailed information about targets of interest that are hidden from view. Due to the isotropic nature of the induced reactions, radiation detectors can be set on the same side of the object as the neutron source, so that the object can be interrogated from a single side. At the heat of the system is a small generator that produces a continuous, monoenergetic flux of neutrons. By measuring the trajectory of coincident alpha particles that are produced as part of the process, the trajectory of the neutron can be inferred. Interactions between a neutron and the material in its path often produce a gamma ray whose energy is characteristic of that material. When the gamma ray is detected, its energy is measured and combined with the trajectory information to produce a 3-D image of the composition of the object being interrogated. During the course of API development, a number of improvements have been made. A new, more rugged sealed Tube Neutron Generator (STNG) has been designed and fabricated that is less susceptible to radiation damage and better able to withstand the rigors of fielding than earlier designs. A specialized high-voltage power supply for the STNG has also been designed and built. A complete package of software has been written for the tasks of system calibration, diagnostics and data acquisition and analysis. A portable system has been built and field tested, proving that API can be taken out of the lab and into real-world situations, and that its performance in the field is equal to that in the lab.

  10. Superconductive imaging surface magnetometer

    DOE Patents [OSTI]

    Overton, Jr., William C. (Los Alamos, NM); van Hulsteyn, David B. (Santa Fe, NM); Flynn, Edward R. (Los Alamos, NM)

    1991-01-01T23:59:59.000Z

    An improved pick-up coil system for use with Superconducting Quantum Interference Device gradiometers and magnetometers involving the use of superconducting plates near conventional pick-up coil arrangements to provide imaging of nearby dipole sources and to deflect environmental magnetic noise away from the pick-up coils. This allows the practice of gradiometry and magnetometry in magnetically unshielded environments. One embodiment uses a hemispherically shaped superconducting plate with interior pick-up coils, allowing brain wave measurements to be made on human patients. another embodiment using flat superconducting plates could be used in non-destructive evaluation of materials.

  11. Radiation imaging apparatus

    DOE Patents [OSTI]

    Anger, Hal O. (Berkeley, CA); Martin, Donn C. (Berkeley, CA); Lampton, Michael L. (Berkeley, CA)

    1983-01-01T23:59:59.000Z

    A radiation imaging system using a charge multiplier and a position sensitive anode in the form of periodically arranged sets of interconnected anode regions for detecting the position of the centroid of a charge cloud arriving thereat from the charge multiplier. Various forms of improved position sensitive anodes having single plane electrode connections are disclosed. Various analog and digital signal processing systems are disclosed, including systems which use the fast response of microchannel plates, anodes and preamps to perform scintillation pulse height analysis digitally.

  12. Radiation imaging apparatus

    DOE Patents [OSTI]

    Anger, H.O.; Martin, D.C.; Lampton, M.L.

    1983-07-26T23:59:59.000Z

    A radiation imaging system using a charge multiplier and a position sensitive anode in the form of periodically arranged sets of interconnected anode regions for detecting the position of the centroid of a charge cloud arriving thereat from the charge multiplier. Various forms of improved position sensitive anodes having single plane electrode connections are disclosed. Various analog and digital signal processing systems are disclosed, including systems which use the fast response of microchannel plates, anodes and preamps to perform scintillation pulse height analysis digitally. 15 figs.

  13. Fourier plane image amplifier

    DOE Patents [OSTI]

    Hackel, Lloyd A. (Livermore, CA); Hermann, Mark R. (San Ramon, CA); Dane, C. Brent (Livermore, CA); Tiszauer, Detlev H. (Tracy, CA)

    1995-01-01T23:59:59.000Z

    A solid state laser is frequency tripled to 0.3 .mu.m. A small portion of the laser is split off and generates a Stokes seed in a low power oscillator. The low power output passes through a mask with the appropriate hole pattern. Meanwhile, the bulk of the laser output is focused into a larger stimulated Brillouin scattering (SBS) amplifier. The low power beam is directed through the same cell in the opposite direction. The majority of the amplification takes place at the focus which is the fourier transform plane of the mask image. The small holes occupy large area at the focus and thus are preferentially amplified. The amplified output is now imaged onto the multichip module where the holes are drilled. Because of the fourier plane amplifier, only .about.1/10th the power of a competitive system is needed. This concept allows less expensive masks to be used in the process and requires much less laser power.

  14. Fourier plane image amplifier

    DOE Patents [OSTI]

    Hackel, L.A.; Hermann, M.R.; Dane, C.B.; Tiszauer, D.H.

    1995-12-12T23:59:59.000Z

    A solid state laser is frequency tripled to 0.3 {micro}m. A small portion of the laser is split off and generates a Stokes seed in a low power oscillator. The low power output passes through a mask with the appropriate hole pattern. Meanwhile, the bulk of the laser output is focused into a larger stimulated Brillouin scattering (SBS) amplifier. The low power beam is directed through the same cell in the opposite direction. The majority of the amplification takes place at the focus which is the fourier transform plane of the mask image. The small holes occupy large area at the focus and thus are preferentially amplified. The amplified output is now imaged onto the multichip module where the holes are drilled. Because of the fourier plane amplifier, only about 1/10th the power of a competitive system is needed. This concept allows less expensive masks to be used in the process and requires much less laser power. 1 fig.

  15. Topics in genomic image processing

    E-Print Network [OSTI]

    Hua, Jianping

    2006-04-12T23:59:59.000Z

    : : : : : : : : : : : : : : : : : 10 A. Wavelet-based Medical Image Coding Schemes and M- FISH Image Compression . . . . . . . . . . . . . . . . . . . 10 B. Embedded M-FISH Image Coding (EMIC) . . . . . . . . . 12 1. Segmentation and Shape Coding . . . . . . . . . . . . 13 2. Integer... Wavelet Transform . . . . . . . . . . . . . . . 14 a. 2-D Shape-adaptive Integer Wavelet Transform . 14 b. 3-D Integer Wavelet Transform Structure . . . . . 15 3. Fractional Bit-plane Coding . . . . . . . . . . . . . . . 16 a. Object-based Coding...

  16. Document Imaging | Department of Energy

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Imaging Converting Paper Documents into Electronic Files Converting paper documents into electronic files helps us manage, store, access and archive the organizational information...

  17. Lensless Imaging of Magnetic Nanostructures

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    this technique has been especially popular in imaging such complex structures as aerogels and yeast cells. When applying the CDI technique to a magnetic system, the same...

  18. Application of Parallel Imaging to Murine Magnetic Resonance Imaging

    E-Print Network [OSTI]

    Chang, Chieh-Wei 1980-

    2012-09-21T23:59:59.000Z

    . This dissertation describes foundational level work to enable parallel imaging of mice on a 4.7 Tesla/40 cm bore research scanner. Reducing the size of the hardware setup associated with typical parallel imaging was an integral part of achieving the work, as animal...

  19. Exploring Interaction Between Images and Texts for Web Image Categorization

    E-Print Network [OSTI]

    Li, Tao

    , Jingxuan Li1 , Tao Li1 1 School of Computing and Information Sciences Florida International University on a manually collected image dataset (consist- ing of images related to the events after disasters) demon users in mul- timedia databases is becoming more and more difficult and challenging. Particulary, web

  20. Broken hearts and the heart broken: living with, and dying from, heart failure in Scotland 

    E-Print Network [OSTI]

    Pratt, Rebekah Janet

    2012-11-30T23:59:59.000Z

    Heart failure is a common and serious chronic condition, which can be as ‘malignant’ as most forms of cancer (Stewart, MacIntyre, Hole, Capewell, & McMurray, 2001). Recent estimates are that around 40,000 men and 45,000 ...

  1. Processing Visual Images

    SciTech Connect (OSTI)

    Litke, Alan (UC Santa Cruz) [UC Santa Cruz

    2006-03-27T23:59:59.000Z

    The back of the eye is lined by an extraordinary biological pixel detector, the retina. This neural network is able to extract vital information about the external visual world, and transmit this information in a timely manner to the brain. In this talk, Professor Litke will describe a system that has been implemented to study how the retina processes and encodes dynamic visual images. Based on techniques and expertise acquired in the development of silicon microstrip detectors for high energy physics experiments, this system can simultaneously record the extracellular electrical activity of hundreds of retinal output neurons. After presenting first results obtained with this system, Professor Litke will describe additional applications of this incredible technology.

  2. Imaging synthetic aperture radar

    DOE Patents [OSTI]

    Burns, Bryan L. (Tijeras, NM); Cordaro, J. Thomas (Albuquerque, NM)

    1997-01-01T23:59:59.000Z

    A linear-FM SAR imaging radar method and apparatus to produce a real-time image by first arranging the returned signals into a plurality of subaperture arrays, the columns of each subaperture array having samples of dechirped baseband pulses, and further including a processing of each subaperture array to obtain coarse-resolution in azimuth, then fine-resolution in range, and lastly, to combine the processed subapertures to obtain the final fine-resolution in azimuth. Greater efficiency is achieved because both the transmitted signal and a local oscillator signal mixed with the returned signal can be varied on a pulse-to-pulse basis as a function of radar motion. Moreover, a novel circuit can adjust the sampling location and the A/D sample rate of the combined dechirped baseband signal which greatly reduces processing time and hardware. The processing steps include implementing a window function, stabilizing either a central reference point and/or all other points of a subaperture with respect to doppler frequency and/or range as a function of radar motion, sorting and compressing the signals using a standard fourier transforms. The stabilization of each processing part is accomplished with vector multiplication using waveforms generated as a function of radar motion wherein these waveforms may be synthesized in integrated circuits. Stabilization of range migration as a function of doppler frequency by simple vector multiplication is a particularly useful feature of the invention; as is stabilization of azimuth migration by correcting for spatially varying phase errors prior to the application of an autofocus process.

  3. Geosciences 466/566 Digital Image Processing

    E-Print Network [OSTI]

    Wright, Dawn Jeannine

    Geosciences 466/566 Digital Image Processing Winter 2007 Instructor Dr. Anne Nolin Wilkinson 120 This course focuses on the digital image processing of satellite image data. Topics include: data types, image://my.oregonstate.edu Textbook Jensen, J. R., Digital Image Processing: A Remote Sensing Perspective, 3rd Edition, Prentice Hall

  4. Simultaneous acquisition of differing image types

    DOE Patents [OSTI]

    Demos, Stavros G

    2012-10-09T23:59:59.000Z

    A system in one embodiment includes an image forming device for forming an image from an area of interest containing different image components; an illumination device for illuminating the area of interest with light containing multiple components; at least one light source coupled to the illumination device, the at least one light source providing light to the illumination device containing different components, each component having distinct spectral characteristics and relative intensity; an image analyzer coupled to the image forming device, the image analyzer decomposing the image formed by the image forming device into multiple component parts based on type of imaging; and multiple image capture devices, each image capture device receiving one of the component parts of the image. A method in one embodiment includes receiving an image from an image forming device; decomposing the image formed by the image forming device into multiple component parts based on type of imaging; receiving the component parts of the image; and outputting image information based on the component parts of the image. Additional systems and methods are presented.

  5. Cloud Remote Sensing with Sideways-Looks : Theory and First Results Using Multispectral Thermal Imager Data

    SciTech Connect (OSTI)

    Davis, A. B. (Anthony B.)

    2002-01-01T23:59:59.000Z

    In operational remote sensing, the implicit model for cloud geometry is a homogeneous plane-parallel slab of infinite horizontal extent. Each pixel is indeed processed as if it exchanged no radiant energy whatsoever with its neighbors. The shortcomings of this conceptual model have been well documented in the specialized literature but rarely mitigated. The worst-case scenario is probably high-resolution imagery where dense isolated clouds are visible, often both bright (reflective) and dark (transmissive) sides being apparent from the same satellite viewing angle: the low transmitted radiance could conceivably be interpreted in plane-parallel theory as no cloud at all. An alternative to the plane-parallel cloud model is introduced here that has the same appeal of being analytically tractable, at least in the diffusion limit: the spherical cloud. This new geometrical paradigm is applied to radiances from cumulus clouds captured by DOE's Multispectral Thermal Imager (MTI). Estimates of isolated cloud opacities are a necessary first step in correcting radiances from surface targets that are visible in the midst of a broken-cloud field. This type of advanced atmospheric correction is badly needed in remote sensing applications such as nonproliferation detection were waiting for a cloud-free look in the indefinite future is not a viable option.

  6. Image texture analysis of elastograms

    E-Print Network [OSTI]

    Hussain, Fasahat

    1999-01-01T23:59:59.000Z

    generated elastograms to obtain effective texture features. Four image analysis techniques, co-occurrence statistics, wavelet decomposition, fractal analysis and granulomeay are used to extract a number of features from each image. The inclusions...-RESOLUTION FRACTAL ANALYSIS . . . . . . E. GRANULOMETRIC FEATURES . . F. DATA NORMALIZATION . G. SEPARABILITY MEASURE 13 13 . . . . . 14 . . . . . 20 . . . . . 29 33 36 36 IV TEXTURE ANALYSIS OF SIMULATED ELASTOGRAMS. . . . . . . . . . . 38 A. SIMULATION...

  7. Video surveillance with speckle imaging

    DOE Patents [OSTI]

    Carrano, Carmen J. (Livermore, CA); Brase, James M. (Pleasanton, CA)

    2007-07-17T23:59:59.000Z

    A surveillance system looks through the atmosphere along a horizontal or slant path. Turbulence along the path causes blurring. The blurring is corrected by speckle processing short exposure images recorded with a camera. The exposures are short enough to effectively freeze the atmospheric turbulence. Speckle processing is used to recover a better quality image of the scene.

  8. Image Mining: Detecting Deforestation Patterns

    E-Print Network [OSTI]

    Camara, Gilberto

    54 Chapter IV Image Mining: Detecting Deforestation Patterns Through Satellites Marcelino Pereira to analyze satellite images and extract knowledge from this kind of data. The Amazonia deforestation problem of change on deforested areas of Amazonia. The purpose of the authors is to present relevant technologies

  9. Instrumentation for parallel magnetic resonance imaging

    E-Print Network [OSTI]

    Brown, David Gerald

    2007-04-25T23:59:59.000Z

    Parallel magnetic resonance (MR) imaging may be used to increase either the throughput or the speed of the MR imaging experiment. As such, parallel imaging may be accomplished either through a "parallelization" of the MR experiment, or by the use...

  10. Digital holographic imaging of aquatic species

    E-Print Network [OSTI]

    Domínguez-Caballero, José Antonio

    2006-01-01T23:59:59.000Z

    The aim of this thesis is to design, develop and implement a digital holographic imaging (DHI) system, capable of capturing three-dimensional (3D) images of aquatic species. The images produced by this system are used in ...

  11. Imaging Oxygen Molecules Up Close | EMSL

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Imaging Oxygen Molecules Up Close Imaging Oxygen Molecules Up Close Released: March 20, 2011 ARRA-enabled upgrades enhance research capabilities STM images of the same TiO2(110)...

  12. Neutron Imaging of Advanced Engine Technologies

    Broader source: Energy.gov (indexed) [DOE]

    Highly sensitive to water and hydrocarbonsfuel * Can image carbon soot layer due to absorption of water and HC - Image is based on absence of neutrons * X-ray imaging relies upon...

  13. Medical Image Registration: A Quick Win

    E-Print Network [OSTI]

    Ansorge, Richard

    2008-11-11T23:59:59.000Z

    Medical Image Registration A Quick Win Richard Ansorge The problem CT, MRI, PET and Ultrasound produce 3D volume images Typically 256 x 256 x 256 = 16,777,216 image voxels. Combining modalities (inter modality) gives extra information. Repeated... imaging over time same modality, e.g. MRI, (intra modality) equally important. Have to spatially register the images. Example – brain lesion CT MRI PET PET-MR Fusion The PET image shows...

  14. Image indexing using color correlograms

    DOE Patents [OSTI]

    Huang, Jing (Ossining, NY); Kumar, Shanmugasundaram Ravi (San Jose, CA); Mitra, Mandar (Calcutta, IN); Zhu, Wei-Jing (Ossining, NY)

    2001-01-01T23:59:59.000Z

    A color correlogram is a three-dimensional table indexed by color and distance between pixels which expresses how the spatial correlation of color changes with distance in a stored image. The color correlogram may be used to distinguish an image from other images in a database. To create a color correlogram, the colors in the image are quantized into m color values, c.sub.i . . . c.sub.m. Also, the distance values k.epsilon.[d] to be used in the correlogram are determined where [d] is the set of distances between pixels in the image, and where dmax is the maximum distance measurement between pixels in the image. Each entry (i, j, k) in the table is the probability of finding a pixel of color c.sub.i at a selected distance k from a pixel of color c.sub.i. A color autocorrelogram, which is a restricted version of the color correlogram that considers color pairs of the form (i,i) only, may also be used to identify an image.

  15. Reaction product imaging

    SciTech Connect (OSTI)

    Chandler, D.W. [Sandia National Laboratories, Livermore, CA (United States)

    1993-12-01T23:59:59.000Z

    Over the past few years the author has investigated the photochemistry of small molecules using the photofragment imaging technique. Bond energies, spectroscopy of radicals, dissociation dynamics and branching ratios are examples of information obtained by this technique. Along with extending the technique to the study of bimolecular reactions, efforts to make the technique as quantitative as possible have been the focus of the research effort. To this end, the author has measured the bond energy of the C-H bond in acetylene, branching ratios in the dissociation of HI, the energetics of CH{sub 3}Br, CD{sub 3}Br, C{sub 2}H{sub 5}Br and C{sub 2}H{sub 5}OBr dissociation, and the alignment of the CD{sub 3} fragment from CD{sub 3}I photolysis. In an effort to extend the technique to bimolecular reactions the author has studied the reaction of H with HI and the isotopic exchange reaction between H and D{sub 2}.

  16. Nuclear medicine imaging system

    DOE Patents [OSTI]

    Bennett, Gerald W. (East Moriches, NY); Brill, A. Bertrand (Shoreham, NY); Bizais, Yves J. C. (Upton, NY); Rowe, R. Wanda (Upton, NY); Zubal, I. George (Upton, NY)

    1986-01-01T23:59:59.000Z

    A nuclear medicine imaging system having two large field of view scintillation cameras mounted on a rotatable gantry and being movable diametrically toward or away from each other is disclosed. In addition, each camera may be rotated about an axis perpendicular to the diameter of the gantry. The movement of the cameras allows the system to be used for a variety of studies, including positron annihilation, and conventional single photon emission, as well as static orthogonal dual multi-pinhole tomography. In orthogonal dual multi-pinhole tomography, each camera is fitted with a seven pinhole collimator to provide seven views from slightly different perspectives. By using two cameras at an angle to each other, improved sensitivity and depth resolution is achieved. The computer system and interface acquires and stores a broad range of information in list mode, including patient physiological data, energy data over the full range detected by the cameras, and the camera position. The list mode acquisition permits the study of attenuation as a result of Compton scatter, as well as studies involving the isolation and correlation of energy with a range of physiological conditions.

  17. Correlated Biofilm Imaging, Transport and Metabolism Measurements...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Biofilm Imaging, Transport and Metabolism Measurements via Combined Nuclear Magnetic Resonance and Confocal Correlated Biofilm Imaging, Transport and Metabolism Measurements via...

  18. Flow Imaging Using MRI: Quantification and Analysis

    E-Print Network [OSTI]

    Jiraraksopakun, Yuttapong

    2010-07-14T23:59:59.000Z

    dynamics (CFD) and the conventional optimal flow imaging based on particle image velocimetry (PIV). The results demonstrated the improvement from the quantification using solely the conventional HARP method....

  19. Nanometer Resolution Imaging by SIngle Molecule Switching. |...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Nanometer Resolution Imaging by SIngle Molecule Switching. Nanometer Resolution Imaging by SIngle Molecule Switching. Abstract: The fluorescence intensity of single molecules can...

  20. ORNL microscopy directly images problematic lithium dendrites...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    865.574.7308 ORNL microscopy directly images problematic lithium dendrites in batteries ORNL electron microscopy captured the first real-time nanoscale images of the nucleation and...

  1. Image Storage in Hot Vapors

    E-Print Network [OSTI]

    L. Zhao; T. Wang; Y. Xiao; S. F. Yelin

    2007-10-22T23:59:59.000Z

    We theoretically investigate image propagation and storage in hot atomic vapor. A $4f$ system is adopted for imaging and an atomic vapor cell is placed over the transform plane. The Fraunhofer diffraction pattern of an object in the object plane can thus be transformed into atomic Raman coherence according to the idea of ``light storage''. We investigate how the stored diffraction pattern evolves under diffusion. Our result indicates, under appropriate conditions, that an image can be reconstructed with high fidelity. The main reason for this procedure to work is the fact that diffusion of opposite-phase components of the diffraction pattern interfere destructively.

  2. Quantum ghost imaging through turbulence

    E-Print Network [OSTI]

    Dixon, P. Ben

    We investigate the effect of turbulence on quantum ghost imaging. We use entangled photons and demonstrate that for a specific experimental configuration the effect of turbulence can be greatly diminished. By decoupling ...

  3. Scanning strategies for imaging arrays

    E-Print Network [OSTI]

    A. Kovacs

    2008-06-30T23:59:59.000Z

    Large-format (sub)millimeter wavelength imaging arrays are best operated in scanning observing modes rather than traditional position-switched (chopped) modes. The choice of observing mode is critical for isolating source signals from various types of noise interference, especially for ground-based instrumentation operating under a bright atmosphere. Ideal observing strategies can combat 1/f noise, resist instrumental defects, sensitively recover emission on large scales, and provide an even field coverage -- all under feasible requirements of telescope movement. This work aims to guide the design of observing patterns that maximize scientific returns. It also compares some of the popular choices of observing modes for (sub)millimeter imaging, such as random, Lissajous, billiard, spiral, On-The-Fly (OTF), DREAM, chopped and stare patterns. Many of the conclusions are also applicable other imaging applications and imaging in one dimension (e.g. spectroscopic observations).

  4. Imaging atoms in 3-D

    ScienceCinema (OSTI)

    Ercius, Peter

    2014-06-27T23:59:59.000Z

    Berkeley Lab's Peter Ercius discusses "Imaging atoms in 3-D" in this Oct. 28, 2013 talk, which is part of a Science at the Theater event entitled Eight Big Ideas

  5. Motion Estimation from Disparity Images

    E-Print Network [OSTI]

    Demirdjian, D.

    2001-05-07T23:59:59.000Z

    A new method for 3D rigid motion estimation from stereo is proposed in this paper. The appealing feature of this method is that it directly uses the disparity images obtained from stereo matching. We assume that the stereo ...

  6. VAX-based ''IMAGE'' backup

    SciTech Connect (OSTI)

    Harris, D.D.

    1985-10-01T23:59:59.000Z

    Increasing usage of the Applicon IMAGE systems at Bendix Kansas City Division (BKC) conflicts with the need to do daily backup of changed AGS files. This paper describes a VAX-based method for automated, unattended, off-shift backup.

  7. Imaging atoms in 3-D

    SciTech Connect (OSTI)

    Ercius, Peter

    2013-10-31T23:59:59.000Z

    Berkeley Lab's Peter Ercius discusses "Imaging atoms in 3-D" in this Oct. 28, 2013 talk, which is part of a Science at the Theater event entitled Eight Big Ideas

  8. Imaging Liquids Using Microfluidic Cells

    SciTech Connect (OSTI)

    Yu, Xiao-Ying; Liu, Bingwen; Yang, Li

    2013-05-10T23:59:59.000Z

    Chemistry occurring in the liquid and liquid surface is important in many applications. Chemical imaging of liquids using vacuum based analytical techniques is challenging due to the difficulty in working with liquids with high volatility. Recent development in microfluidics enabled and increased our capabilities to study liquid in situ using surface sensitive techniques such as electron microscopy and spectroscopy. Due to its small size, low cost, and flexibility in design, liquid cells based on microfluidics have been increasingly used in studying and imaging complex phenomena involving liquids. This paper presents a review of microfluidic cells that were developed to adapt to electron microscopes and various spectrometers for in situ chemical analysis and imaging of liquids. The following topics will be covered including cell designs, fabrication techniques, unique technical features for vacuum compatible cells, and imaging with electron microscopy and spectroscopy. Challenges are summarized and recommendations for future development priority are proposed.

  9. Thomas Jefferson: image and ideology 

    E-Print Network [OSTI]

    Wilson, Gaye N. S. B.

    2012-11-30T23:59:59.000Z

    This thesis explores the public image of Thomas Jefferson as recorded in his major life portraits. It consults the traditions that surrounded eighteenth-century portraiture and the history of the portrait as a means of ...

  10. Identifying structural damage from images

    E-Print Network [OSTI]

    Chen, ZhiQiang

    2009-01-01T23:59:59.000Z

    Pattern Recognition, 26 PDC. Paci?c disater center, 2008.which were acquired from the Paci?c Disaster Center (PDC) (PDC, 2008). These images cover Banda Aceh and its

  11. Radiopharmaceuticals for imaging the heart

    DOE Patents [OSTI]

    Green, M.A.; Tsang, B.W.

    1994-06-28T23:59:59.000Z

    Radiopharmaceuticals for imaging myocardial tissues are prepared by forming lipophilic, cationic complexes of radioactive metal ions with metal chelating ligands comprising the Schiff base adducts of triamines and tetraamines with optionally substituted salicylaldehydes. The lipophilic, cationic, radioactive complexes of the invention exhibit high uptake and retention in myocardial tissues. Preferred gallium-68(III) complexes in accordance with this invention can be used to image the heart using positron emission tomography. 6 figures.

  12. Radiopharmaceuticals for imaging the heart

    DOE Patents [OSTI]

    Green, Mark A. (West Lafayette, IN); Tsang, Brenda W. (Lafayette, IN)

    1994-01-01T23:59:59.000Z

    Radiopharmaceuticals for imaging myocardial tissues are prepared by forming lipophilic, cationic complexes of radioactive metal ions with metal chelating ligands comprising the Schiff base adducts of triamines and tetraamines with optionally substituted salicylaldehydes. The lipophilic, cationic, radioactive complexes of the invention exhibit high uptake and retention in myocardial tissues. Preferred gallium-68(III) complexes in accordance with this invention can be used to image the heart using positron emission tomography.

  13. Composition-Mediated Order-Disorder Transformation in FePt Nanoparticles

    SciTech Connect (OSTI)

    Johnston-Peck, Aaron C [ORNL; Cullen, David A [ORNL; Tracy, Joseph B [North Carolina State University

    2013-01-01T23:59:59.000Z

    Thumbnail image of graphical abstract Heat-treated alloy FePt nanoparticles transform into L10 FePt and mixed L10/L12 FePt3 intermetallic phases. Enrichment in Pt in some nanoparticles, rather than intrinsic thermodynamic effects, drives phase segregation. FePt nanoparticles of uniform, equimolar composition are expected to transform into phase-pure, highly ordered L10 FePt nanoparticles.

  14. Image description. Cover Image End of image description. NATIONAL CENTER FOR EDUCATION STATISTICS

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    a context for examining the data they submitted to IPEDS. Our goal is to produce a report that is useful University 2 #12;Image description. Bar chart with 10 groups with 2 items per group.Y scale titled Percent

  15. BLIND DECONVOLUTION AND DEBLURRING IN IMAGE ANALYSIS

    E-Print Network [OSTI]

    Qiu, Peihua

    BLIND DECONVOLUTION AND DEBLURRING IN IMAGE ANALYSIS Peter Hall 1 and Peihua Qiu 1.2 ABSTRACT. Blind deconvolution problems arise in image analysis when both the extent of image blur, and the true from image data. This is a blind deconvolution problem and is, of course, significantly more

  16. Image Based Gisting in CLIR Mark Sanderson

    E-Print Network [OSTI]

    Sanderson, Mark

    from the Rosch [1] paper. These search terms were entered into the Google Image search engine in order the ability of subjects to derive the search term that might have been used to return a set of images from on subjects' abilities in this respect. Search terms were defined and images found using an online image

  17. Image Fusion: Principles, Methods, and Applications

    E-Print Network [OSTI]

    Sroubek, Filip

    different sensors (visible and infrared, CT and NMR, or panchromatic and multispectral satellite images fusion is used to achieve high spatial and spectral resolutions by combining images from two sensors, one applications have appeared in medical imaging like simultaneous evaluation of CT, MRI, and/or PET images

  18. Automatic Eyeglasses Removal from Face Images

    E-Print Network [OSTI]

    Narasayya, Vivek

    Automatic Eyeglasses Removal from Face Images Chenyu Wu, Ce Liu, Heung-Yueng Shum, Member, IEEE an intelligent image editing and face synthesis system that automatically removes eyeglasses from an input frontal face image. Although conventional image editing tools can be used to remove eyeglasses by pixel

  19. Microscopy image segmentation tool: Robust image data analysis

    SciTech Connect (OSTI)

    Valmianski, Ilya, E-mail: ivalmian@ucsd.edu; Monton, Carlos; Schuller, Ivan K. [Department of Physics and Center for Advanced Nanoscience, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093 (United States)] [Department of Physics and Center for Advanced Nanoscience, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093 (United States)

    2014-03-15T23:59:59.000Z

    We present a software package called Microscopy Image Segmentation Tool (MIST). MIST is designed for analysis of microscopy images which contain large collections of small regions of interest (ROIs). Originally developed for analysis of porous anodic alumina scanning electron images, MIST capabilities have been expanded to allow use in a large variety of problems including analysis of biological tissue, inorganic and organic film grain structure, as well as nano- and meso-scopic structures. MIST provides a robust segmentation algorithm for the ROIs, includes many useful analysis capabilities, and is highly flexible allowing incorporation of specialized user developed analysis. We describe the unique advantages MIST has over existing analysis software. In addition, we present a number of diverse applications to scanning electron microscopy, atomic force microscopy, magnetic force microscopy, scanning tunneling microscopy, and fluorescent confocal laser scanning microscopy.

  20. The "Goldstone Exception" II: Absence of a Higgs Fine-Tuning Problem in the Spontaneously Broken Limit of the Gell Mann Levy Linear Sigma Model: O(4) with PCAC and SU(2)_L with PCAC and Standard Model Quarks and Leptons

    E-Print Network [OSTI]

    Bryan W. Lynn; Glenn D. Starkman; Katherine Freese; Dmitry I. Podolsky

    2013-01-23T23:59:59.000Z

    More than four decades ago, Lee and Symanzik proved that, in the Gell Mann-Levy (GML) model with partially conserved axial-vector currents (PCAC), tadpole renormalization (a Higgs Vacuum Stability Condition) forces all S-matrix ultra-violet quadratic divergences (UVQD) to be absorbed into the physical renormalized pseudo-scalar pion (pole) mass squared. We show that this includes "new" UVQD (widely unfamiliar to modern audiences). We also show that tadpole renormalization is an automatic consequence of Ward-Takahashi identities. We prove that all UVQD therefore vanish identically in the Goldstone-mode limit, where pions are Nambu-Goldstone Bosons (NGB), and where Lee and Symanzik's Goldstone Symmetry Restoration Condition (a renormalization prescription) enforces spontaneous symmetry breaking and the massless-ness of NGB. Axial-vector current conservation is restored as is SU(2)(L-R) chiral symmetry: the vanishing of UVQD is therefore achieved in the Goldstone-mode by restoration of an exact symmetry, and therefore (by definition) without fine-tuning! A weak-scale Higgs mass is therefore not UVQD fine-tuned in the spontaneously broken GML LSM. That is simply another (albeit unfamiliar) consequence of the Goldstone Theorem. Hence Goldstone-mode O(4) LSM symmetries are sufficient to ensure that the theory does not suffer from the Higgs Fine Tuning Problem. This is contrary to the widely accepted belief that UVQD in the Higgs mass lead to such problems in the O(4) LSM, which are then presumed to be inherited by the Standard Model (SM). The key observation is to regard the spontaneously broken O(4) LSM as the Goldstone-mode limit of the GML LSM. We prove this first at 1-loop then at all loop orders for the pure scalar GML model. We then break the O(4) symmetry to SU(2)L with SM Yukawa couplings, and show that the above remains true.

  1. STAR Images: Image gallery from the Solenoidal Tracker at RHIC

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    The primary physics task of STAR is to study the formation and characteristics of the quark-gluon plasma (QGP), a state of matter believed to exist at sufficiently high energy densities. STAR consists of several types of detectors, each specializing in detecting certain types of particles or characterizing their motion. These detectors allow final statements to be made about the collision. The gallery of STAR images makes available a small collection of event-generated images from Gold-Beam experiments, a simulation of TCP Drift, and a library of STAR instrument and construction photos.

  2. Miniature hybrid optical imaging lens

    DOE Patents [OSTI]

    Sitter, Jr., David N. (Knoxville, TN); Simpson, Marc L. (Knoxville, TN)

    1997-01-01T23:59:59.000Z

    A miniature lens system that corrects for imaging and chromatic aberrations, the lens system being fabricated from primarily commercially-available components. A first element at the input to a lens housing is an aperture stop. A second optical element is a refractive element with a diffractive element closely coupled to, or formed a part of, the rear surface of the refractive element. Spaced closely to the diffractive element is a baffle to limit the area of the image, and this is closely followed by a second refractive lens element to provide the final correction. The image, corrected for aberrations exits the last lens element to impinge upon a detector plane were is positioned any desired detector array. The diffractive element is fabricated according to an equation that includes, as variables, the design wavelength, the index of refraction and the radius from an optical axis of the lens system components.

  3. Miniature hybrid optical imaging lens

    DOE Patents [OSTI]

    Sitter, D.N. Jr.; Simpson, M.L.

    1997-10-21T23:59:59.000Z

    A miniature lens system that corrects for imaging and chromatic aberrations is disclosed, the lens system being fabricated from primarily commercially-available components. A first element at the input to a lens housing is an aperture stop. A second optical element is a refractive element with a diffractive element closely coupled to, or formed a part of, the rear surface of the refractive element. Spaced closely to the diffractive element is a baffle to limit the area of the image, and this is closely followed by a second refractive lens element to provide the final correction. The image, corrected for aberrations exits the last lens element to impinge upon a detector plane were is positioned any desired detector array. The diffractive element is fabricated according to an equation that includes, as variables, the design wavelength, the index of refraction and the radius from an optical axis of the lens system components. 2 figs.

  4. Tunable Imaging Filters in Astronomy

    E-Print Network [OSTI]

    J. Bland-Hawthorn

    2000-06-05T23:59:59.000Z

    While tunable filters are a recent development in night time astronomy, they have long been used in other physical sciences, e.g. solar physics, remote sensing and underwater communications. With their ability to tune precisely to a given wavelength using a bandpass optimized for the experiment, tunable filters are already producing some of the deepest narrowband images to date of astrophysical sources. Furthermore, some classes of tunable filters can be used in fast telescope beams and therefore allow for narrowband imaging over angular fields of more than a degree over the sky.

  5. Electronic imaging system and technique

    DOE Patents [OSTI]

    Bolstad, J.O.

    1984-06-12T23:59:59.000Z

    A method and system for viewing objects obscurred by intense plasmas or flames (such as a welding arc) includes a pulsed light source to illuminate the object, the peak brightness of the light reflected from the object being greater than the brightness of the intense plasma or flame; an electronic image sensor for detecting a pulsed image of the illuminated object, the sensor being operated as a high-speed shutter; and electronic means for synchronizing the shutter operation with the pulsed light source.

  6. Multispectral imaging method and apparatus

    DOE Patents [OSTI]

    Sandison, D.R.; Platzbecker, M.R.; Vargo, T.D.; Lockhart, R.R.; Descour, M.R.; Richards-Kortum, R.

    1999-07-06T23:59:59.000Z

    A multispectral imaging method and apparatus are described which are adapted for use in determining material properties, especially properties characteristic of abnormal non-dermal cells. A target is illuminated with a narrow band light beam. The target expresses light in response to the excitation. The expressed light is collected and the target's response at specific response wavelengths to specific excitation wavelengths is measured. From the measured multispectral response the target's properties can be determined. A sealed, remote probe and robust components can be used for cervical imaging. 5 figs.

  7. Buried object detection in GPR images

    DOE Patents [OSTI]

    Paglieroni, David W; Chambers, David H; Bond, Steven W; Beer, W. Reginald

    2014-04-29T23:59:59.000Z

    A method and system for detecting the presence of subsurface objects within a medium is provided. In some embodiments, the imaging and detection system operates in a multistatic mode to collect radar return signals generated by an array of transceiver antenna pairs that is positioned across the surface and that travels down the surface. The imaging and detection system pre-processes the return signal to suppress certain undesirable effects. The imaging and detection system then generates synthetic aperture radar images from real aperture radar images generated from the pre-processed return signal. The imaging and detection system then post-processes the synthetic aperture radar images to improve detection of subsurface objects. The imaging and detection system identifies peaks in the energy levels of the post-processed image frame, which indicates the presence of a subsurface object.

  8. Multi-channel medical imaging system

    DOE Patents [OSTI]

    Frangioni, John V

    2013-12-31T23:59:59.000Z

    A medical imaging system provides simultaneous rendering of visible light and fluorescent images. The system may employ dyes in a small-molecule form that remain in the subject's blood stream for several minutes, allowing real-time imaging of the subject's circulatory system superimposed upon a conventional, visible light image of the subject. The system may provide an excitation light source to excite the fluorescent substance and a visible light source for general illumination within the same optical guide used to capture images. The system may be configured for use in open surgical procedures by providing an operating area that is closed to ambient light. The systems described herein provide two or more diagnostic imaging channels for capture of multiple, concurrent diagnostic images and may be used where a visible light image may be usefully supplemented by two or more images that are independently marked for functional interest.

  9. Chapter 20. Magnetic Resonance Imaging Magnetic Resonance Imaging

    E-Print Network [OSTI]

    , and software training from Siemens Medical Solutions; research funding through the Siemens-MIT Alliance and Technology (HST). 2 Siemens Medical Solutions, Erlangen, Germany. #12;Chapter 20. Magnetic Resonance Imaging, Siemens Medical Solutions, Siemens-MIT Alliance, HST Martinos Catalyst Fund. Project Staff: Audrey P. Fan

  10. Upright cone beam CT imaging using the onboard imager

    SciTech Connect (OSTI)

    Fave, Xenia, E-mail: xjfave@mdanderson.org; Martin, Rachael [Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030 and The University of Texas Graduate School of Biomedical Sciences at Houston, Houston, Texas 77030 (United States)] [Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030 and The University of Texas Graduate School of Biomedical Sciences at Houston, Houston, Texas 77030 (United States); Yang, Jinzhong; Balter, Peter; Court, Laurence [Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030 (United States)] [Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030 (United States); Carvalho, Luis [Varian Medical Systems, Zug 6303 (Switzerland)] [Varian Medical Systems, Zug 6303 (Switzerland); Pan, Tinsu [Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030 (United States)] [Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030 (United States)

    2014-06-15T23:59:59.000Z

    Purpose: Many patients could benefit from being treated in an upright position. The objectives of this study were to determine whether cone beam computed tomography (CBCT) could be used to acquire upright images for treatment planning and to demonstrate whether reconstruction of upright images maintained accurate geometry and Hounsfield units (HUs). Methods: A TrueBeam linac was programmed in developer mode to take upright CBCT images. The gantry head was positioned at 0°, and the couch was rotated to 270°. The x-ray source and detector arms were extended to their lateral positions. The x-ray source and gantry remained stationary as fluoroscopic projections were taken and the couch was rotated from 270° to 90°. The x-ray tube current was normalized to deposit the same dose (measured using a calibrated Farmer ion chamber) as that received during a clinical helical CT scan to the center of a cylindrical, polyethylene phantom. To extend the field of view, two couch rotation scans were taken with the detector offset 15 cm superiorly and then 15 cm inferiorly. The images from these two scans were stitched together before reconstruction. Upright reconstructions were compared to reconstructions from simulation CT scans of the same phantoms. Two methods were investigated for correcting the HUs, including direct calibration and mapping the values from a simulation CT. Results: Overall geometry, spatial linearity, and high contrast resolution were maintained in upright reconstructions. Some artifacts were created and HU accuracy was compromised; however, these limitations could be removed by mapping the HUs from a simulation CT to the upright reconstruction for treatment planning. Conclusions: The feasibility of using the TrueBeam linac to take upright CBCT images was demonstrated. This technique is straightforward to implement and could be of enormous benefit to patients with thoracic tumors or those who find a supine position difficult to endure.

  11. Broadband X-ray Imaging and Spectroscopy of the Crab Nebula and Pulsar with NuSTAR

    E-Print Network [OSTI]

    Madsen, Kristin K; Harrison, Fiona; An, Hongjun; Boggs, Steven; Christensen, Finn E; Craig, William W; Fryer, Chris L; Grefenstette, Brian W; Hailey, Charles J; Markwardt, Craig; Nynka, Melania; Stern, Daniel; Zoglauer, Andreas; Zhang, William

    2015-01-01T23:59:59.000Z

    We present broadband (3 -- 78 keV) NuSTAR X-ray imaging and spectroscopy of the Crab nebula and pulsar. We show that while the phase-averaged and spatially integrated nebula + pulsar spectrum is a power-law in this energy band, spatially resolved spectroscopy of the nebula finds a break at $\\sim$9 keV in the spectral photon index of the torus structure with a steepening characterized by $\\Delta\\Gamma\\sim0.25$. We also confirm a previously reported steepening in the pulsed spectrum, and quantify it with a broken power-law with break energy at $\\sim$12 keV and $\\Delta\\Gamma\\sim0.27$. We present spectral maps of the inner 100\\as\\ of the remnant and measure the size of the nebula as a function of energy in seven bands. These results find that the rate of shrinkage with energy of the torus size can be fitted by a power-law with an index of $\\gamma = 0.094\\pm 0.018$, consistent with the predictions of Kennel and Coroniti (1984). The change in size is more rapid in the NW direction, coinciding with the counter-jet w...

  12. Hadamard multimode optical imaging transceiver

    DOE Patents [OSTI]

    Cooke, Bradly J; Guenther, David C; Tiee, Joe J; Kellum, Mervyn J; Olivas, Nicholas L; Weisse-Bernstein, Nina R; Judd, Stephen L; Braun, Thomas R

    2012-10-30T23:59:59.000Z

    Disclosed is a method and system for simultaneously acquiring and producing results for multiple image modes using a common sensor without optical filtering, scanning, or other moving parts. The system and method utilize the Walsh-Hadamard correlation detection process (e.g., functions/matrix) to provide an all-binary structure that permits seamless bridging between analog and digital domains. An embodiment may capture an incoming optical signal at an optical aperture, convert the optical signal to an electrical signal, pass the electrical signal through a Low-Noise Amplifier (LNA) to create an LNA signal, pass the LNA signal through one or more correlators where each correlator has a corresponding Walsh-Hadamard (WH) binary basis function, calculate a correlation output coefficient for each correlator as a function of the corresponding WH binary basis function in accordance with Walsh-Hadamard mathematical principles, digitize each of the correlation output coefficient by passing each correlation output coefficient through an Analog-to-Digital Converter (ADC), and performing image mode processing on the digitized correlation output coefficients as desired to produce one or more image modes. Some, but not all, potential image modes include: multi-channel access, temporal, range, three-dimensional, and synthetic aperture.

  13. Quantum Computing, Metrology, and Imaging

    E-Print Network [OSTI]

    Hwang Lee; Pavel Lougovski; Jonathan P. Dowling

    2005-06-17T23:59:59.000Z

    Information science is entering into a new era in which certain subtleties of quantum mechanics enables large enhancements in computational efficiency and communication security. Naturally, precise control of quantum systems required for the implementation of quantum information processing protocols implies potential breakthoughs in other sciences and technologies. We discuss recent developments in quantum control in optical systems and their applications in metrology and imaging.

  14. Covered Product Category: Imaging Equipment

    Broader source: Energy.gov [DOE]

    FEMP provides acquisition guidance and Federal efficiency requirements across a variety of product categories, including imaging equipment, which is covered by the ENERGY STAR® program. Federal laws and requirements mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law.

  15. Image Compression by Back Propagation

    E-Print Network [OSTI]

    Cottrell, Garrison W.

    CHAPTER 9 Image Compression by Back Propagation: An Example of Extensional Programming* GARRISON W the case with the computatiolls associated with basic cognitive pro- cesses such as vision and audition techniques. The technique we employ is known as back propagation. developed by l1umelhart, Hinton

  16. Image Processing Apr. 16, 2012

    E-Print Network [OSTI]

    Erdem, Erkut

    - The Discrete Fourier transform Log power spectrum #12;Review - The Convolution Theorem · The Fourier frequency components · Fourier (1807): Periodic functions could be represented as a weighted sum of sines and cosines Image courtesy of Technology Review #12;Review - Fourier Transform We want

  17. Enlarge Image Peer pressure. Magnetic

    E-Print Network [OSTI]

    Thywissen, Joseph

    to stick it to your refrigerator, but an ultra-cold gas magnetizes itself just as do metals such as ironEnlarge Image Peer pressure. Magnetic domains in steel (vertical bans) arise when neighboring electrons point their magnetic poles in the same direction. CREDIT: ZUREKS, CHRIS VARDON

  18. Enlarge Image Peer pressure. Magnetic

    E-Print Network [OSTI]

    Enlarge Image Peer pressure. Magnetic domains in steel (vertical bans) arise when neighboring electrons point their magnetic poles in the same direction. CREDIT: ZUREKS, CHRIS VARDON/WIKIMEDIA By Adrian Cho ScienceNOW Daily News 18 September 2009 It would be tough to stick it to your refrigerator

  19. Medical Imaging Computed Tomography (CT)

    E-Print Network [OSTI]

    Massey, Thomas N.

    Module 10 Medical Imaging · X-rays · Computed Tomography (CT) · Positron Emission Tomography (PET Sources PET-TOF #12;Four Sources PET #12;Four Sources PET-TOF #12;PET Scan MRI CT scan #12;Endocrine Gland,000 pixels! #12;Modern Example of CT Scan with the addition of Surface Shading Standard CT With Surface

  20. Dissertation Imaging as Characterization Techniques

    E-Print Network [OSTI]

    Sites, James R.

    Telluride Photovoltaics The goal of increasing the efficiency of solar cell devices is a universal oneDissertation Imaging as Characterization Techniques for Thin-Film Cadmium Telluride Photovoltaics. Increased photovoltaic (PV) performance means an increase in competition with other energy tech- nologies

  1. Low field magnetic resonance imaging

    DOE Patents [OSTI]

    Pines, Alexander (Berkeley, CA); Sakellariou, Dimitrios (Billancourt, FR); Meriles, Carlos A. (Fort Lee, NJ); Trabesinger, Andreas H. (London, GB)

    2010-07-13T23:59:59.000Z

    A method and system of magnetic resonance imaging does not need a large homogenous field to truncate a gradient field. Spatial information is encoded into the spin magnetization by allowing the magnetization to evolve in a non-truncated gradient field and inducing a set of 180 degree rotations prior to signal acquisition.

  2. Non-Destructive Neutron Imaging to Analyze Particulate Filters...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Neutron Imaging to Analyze Particulate Filters Non-Destructive Neutron Imaging to Analyze Particulate Filters Non-destructive, non-invasive imaging is being employed in the...

  3. Viewable image size Max view area (W x H)

    E-Print Network [OSTI]

    Saskatchewan, University of

    Power management Ergonomics Emission standards Environmental Preset resolutions Dual image resolution to portrait (requires image rotation support from graphics controller, do not support image rotation under

  4. MAUI: Modeling, Analysis, and Ultrafast Imaging | Argonne National...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Data Science Modeling and Simulation Multimodal Imaging MAUI: Modeling, Analysis, and Ultrafast Imaging MAUI: Modeling, Analysis, and Ultrafast Imaging Project Goals...

  5. advanced image processing: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Max 12;Signals and Images Wavelets Image processing Models Lakey, Joseph D. 9 Advance Digital Imaging Process for Tungsten Alloys Liquid-Phase Sintered in Microgravity W. B...

  6. annular array imaging: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Glenn H. 26 The SORDS trimodal imager detector arrays MIT - DSpace Summary: The Raytheon Trimodal Imager (TMI) uses coded aperture and Compton imaging technologies as well as...

  7. arrayed imaging reflectometry: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Glenn H. 25 The SORDS trimodal imager detector arrays MIT - DSpace Summary: The Raytheon Trimodal Imager (TMI) uses coded aperture and Compton imaging technologies as well as...

  8. Search Log Analysis of the ARTstor Cultural Heritage Image Database

    E-Print Network [OSTI]

    Lowe, Heather Ann

    2013-01-01T23:59:59.000Z

    Patterns in a Digital Image Database. Information RetrievalCultural Heritage Image Database A thesis submitted inCultural Heritage Image Database by Heather Ann Lowe Master

  9. advanced imaging catheter: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Summary: Image segmentation is very essential and critical to image processing and pattern recognition. This survey provides a summary of color image segmentation techniques...

  10. angiographic image segmentation: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Summary: Image segmentation is very essential and critical to image processing and pattern recognition. This survey provides a summary of color image segmentation techniques...

  11. automatic image segmentation: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Summary: Image segmentation is very essential and critical to image processing and pattern recognition. This survey provides a summary of color image segmentation techniques...

  12. New Mesoscale Multimodal Imaging of Cellular Communication Between...

    Office of Science (SC) Website

    New Mesoscale Multimodal Imaging Bioimaging Technology Bioimaging Technology Home About Research Small Worlds New Mesoscale Multimodal Imaging Adaptive Biosystems Imaging Systems...

  13. Imaging the High Energy Cosmic Ray Sky

    E-Print Network [OSTI]

    Haviland, David

    Imaging the High Energy Cosmic Ray Sky PETTER HOFVERBERG Licentiate Thesis Stockholm, Sweden 2006 #12;#12;Licentiate Thesis Imaging the High Energy Cosmic Ray Sky Petter Hofverberg Particle

  14. Thermal ghost imaging with averaged speckle patterns

    E-Print Network [OSTI]

    Shapiro, Jeffrey H.

    We present theoretical and experimental results showing that a thermal ghost imaging system can produce images of high quality even when it uses detectors so slow that they respond only to intensity-averaged (that is, ...

  15. Automatic caption generation for news images 

    E-Print Network [OSTI]

    Feng, Yansong

    2011-06-30T23:59:59.000Z

    This thesis is concerned with the task of automatically generating captions for images, which is important for many image-related applications. Automatic description generation for video frames would help security ...

  16. Predicting gene function from images of cells

    E-Print Network [OSTI]

    Jones, Thouis Raymond, 1971-

    2007-01-01T23:59:59.000Z

    This dissertation shows that biologically meaningful predictions can be made by analyzing images of cells. In particular, groups of related genes and their biological functions can be predicted using images from large ...

  17. Image fusion for a nighttime driving display

    E-Print Network [OSTI]

    Herrington, William Frederick

    2005-01-01T23:59:59.000Z

    An investigation into image fusion for a nighttime driving display application was performed. Most of the image fusion techniques being investigated in this application were developed for other purposes. When comparing the ...

  18. Image sense disambiguation : a multimodal approach

    E-Print Network [OSTI]

    Saenko, Ekaterina, 1976-

    2009-01-01T23:59:59.000Z

    If a picture is worth a thousand words, can a thousand words be worth a training image? Most successful object recognition algorithms require manually annotated images of objects to be collected for training. The amount ...

  19. Lensless X-Ray Imaging in Reflection

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    X-Ray Imaging in Reflection Print The advent of x-ray free-electron laser (XFEL) light sources has led to an outburst of research activities in the field of lensless imaging. XFELs...

  20. Information efficiency in hyperspectral imaging systems

    E-Print Network [OSTI]

    Reichenbach, Stephen E.

    Information efficiency in hyperspectral imaging systems Stephen E. Reichenbach University develop a method for assessing the in- formation density and efficiency of hyperspectral imaging systems width can efficiently gather information about a scene by allocating bandwidth among the bands according

  1. Foreword,xiii SECTION 1:BASIC IMAGING

    E-Print Network [OSTI]

    Guide: Imaging Synaptogenesis by Measuring Accumulation of Synaptic Proteins, 225 C. Dean and F! Scheiffele A Practical Guide: Imaging Retinotectal Synaptic Connectivity,229 S. Cohen-Corey A Practical Guide

  2. AUTOMATIC IMAGE DECOMPOSTION Kedar A. Patwardhan

    E-Print Network [OSTI]

    Minnesota, University of

    of modifying an image in a non-detectable form [2, 3, 5, 7, 10]. Following work by Meyer [11], Vese and Osher Marcelo Bertalmio, Vicent Caselles, and Liron Yatziv for conversations on image inpainting and Stanley

  3. Integrated computational system for portable retinal imaging

    E-Print Network [OSTI]

    Boggess, Jason (Jason Robert)

    2012-01-01T23:59:59.000Z

    This thesis introduces a system to improve image quality obtained from a low-light CMOS camera-specifically designed to image the surface of the retina. The retinal tissue, as well as having various diseases of its own, ...

  4. Neutron Imaging of Advanced Engine Technologies

    Broader source: Energy.gov (indexed) [DOE]

    Highly sensitive to water and hydrocarbonsfuel * Can image carbon soot layer due to absorption of water and HC - Image is based on absence of neutrons * X-ray absorption increases...

  5. Method for imaging a concealed object

    DOE Patents [OSTI]

    Davidson, James R [Idaho Falls, ID; Partin, Judy K [Idaho Falls, ID; Sawyers, Robert J [Idaho Falls, ID

    2007-07-03T23:59:59.000Z

    A method for imaging a concealed object is described and which includes a step of providing a heat radiating body, and wherein an object to be detected is concealed on the heat radiating body; imaging the heat radiating body to provide a visibly discernible infrared image of the heat radiating body; and determining if the visibly discernible infrared image of the heat radiating body is masked by the presence of the concealed object.

  6. SEISMIC IMAGING WITH THE GENERALIZED RADON ...

    E-Print Network [OSTI]

    2008-07-29T23:59:59.000Z

    SEISMIC IMAGING WITH THE GENERALIZED RADON. TRANSFORM AND DOUBLE BEAMFORMING: A CURVELET. TRANSFORM PERSPECTIVE. M V DE ...

  7. Imaging Hydrated Microbial Extracellular Polymers: Comparative...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Hydrated Microbial Extracellular Polymers: Comparative Analysis by Electron Microscopy . Imaging Hydrated Microbial Extracellular Polymers: Comparative Analysis by Electron...

  8. Robust phase sensitive inversion recovery imaging

    E-Print Network [OSTI]

    Garach, Ravindra Mahendrakumar

    2005-11-01T23:59:59.000Z

    - echo sequence on a 15 Tesla MR scanner (a) Real image; (b) Magnitude reconstruction; (c) PSIR image. : : : : : : : : : : : : : : 60 33 Phase sensitive reconstruction of data acquired using a fast spin- echo sequence on a 15 Tesla MR scanner (a) Real... of data acquired using a fast spin- echo sequence on a 15 Tesla MR scanner (a) Real image; (b) Magnitude reconstruction; (c) PSIR image reconstructed with in- verted polarity. This example demonstrates the problem of global polarity determination...

  9. Reconstruction and Restoration of PET Images.

    E-Print Network [OSTI]

    Mosegaard, Klaus

    Reconstruction and Restoration of PET Images. Ph.D. Thesis Peter Alshede Philipsen LYNGBY 1998 IMM with reconstruction and restoration of Positron Emission Tomography (PET) images carried out at the Section of Digital contains a short introduction to PET imaging. The second part, chapters 2 to 4, describe the PET scanner

  10. Digital image library development in academic environment

    E-Print Network [OSTI]

    Corran, Ruth

    1 Digital image library development in academic environment: designing and testing usability@aup.fr Keywords: Digital image library, usability, student projects, participatory design Abstract Case study Purpose By reporting the experience gained in the development of a digital image library in academic

  11. HDR CFA IMAGE RENDERING David Alleysson,1

    E-Print Network [OSTI]

    Alleysson, David

    HDR CFA IMAGE RENDERING David Alleysson,1 Laurence Meylan,2 and Sabine S¨usstrunk2 1Laboratory of the already demosaiced image. This render- ing is closer to retinal processing where an image is acquired framework, demosaicing is the final step of the rendering. Our method, inspired by retinal sampling

  12. Fast neutron imaging device and method

    DOE Patents [OSTI]

    Popov, Vladimir; Degtiarenko, Pavel; Musatov, Igor V.

    2014-02-11T23:59:59.000Z

    A fast neutron imaging apparatus and method of constructing fast neutron radiography images, the apparatus including a neutron source and a detector that provides event-by-event acquisition of position and energy deposition, and optionally timing and pulse shape for each individual neutron event detected by the detector. The method for constructing fast neutron radiography images utilizes the apparatus of the invention.

  13. Remote Sensing Ayman F. Habib Image Classification

    E-Print Network [OSTI]

    Habib, Ayman

    1 Remote Sensing Ayman F. Habib 1 Chapter 6 Image Classification Remote Sensing Ayman F. Habib 2. ­ Unsupervised classification. · Accuracy assessment. #12;2 Remote Sensing Ayman F. Habib 3 Image Classification of image pixels is based on their digital numbers/grey values in one or more spectral bands. Remote Sensing

  14. Diffuse optical imaging of brain activation: approaches to optimizing image sensitivity, resolution, and accuracy

    E-Print Network [OSTI]

    Boas, David

    Diffuse optical imaging of brain activation: approaches to optimizing image sensitivity, resolution States Available online 11 September 2004 Near-infrared spectroscopy (NIRS) and diffuse optical imaging currently being made and issues to consider for improving optical image quality. These include the optimal

  15. Supplemental Material for "Efficient MR Image Reconstruction for Compressed MR Imaging"

    E-Print Network [OSTI]

    Huang, Junzhou

    D MR images: cardiac, brain, chest and artery respectively. Figure 1, 2, 3 and 4 shows the visual complexity. (a) (b) (c) (d) (e) (f) Fig. 1. Cardiac MR image reconstruction from 20% sampling (a) OriginalSupplemental Material for "Efficient MR Image Reconstruction for Compressed MR Imaging" Paper ID

  16. Image compression/decompression based on mathematical transform, reduction/expansion, and image sharpening

    DOE Patents [OSTI]

    Fu, C.Y.; Petrich, L.I.

    1997-12-30T23:59:59.000Z

    An image represented in a first image array of pixels is first decimated in two dimensions before being compressed by a predefined compression algorithm such as JPEG. Another possible predefined compression algorithm can involve a wavelet technique. The compressed, reduced image is then transmitted over the limited bandwidth transmission medium, and the transmitted image is decompressed using an algorithm which is an inverse of the predefined compression algorithm (such as reverse JPEG). The decompressed, reduced image is then interpolated back to its original array size. Edges (contours) in the image are then sharpened to enhance the perceptual quality of the reconstructed image. Specific sharpening techniques are described. 22 figs.

  17. Image compression/decompression based on mathematical transform, reduction/expansion, and image sharpening

    DOE Patents [OSTI]

    Fu, Chi-Yung (San Francisco, CA); Petrich, Loren I. (Livermore, CA)

    1997-01-01T23:59:59.000Z

    An image represented in a first image array of pixels is first decimated in two dimensions before being compressed by a predefined compression algorithm such as JPEG. Another possible predefined compression algorithm can involve a wavelet technique. The compressed, reduced image is then transmitted over the limited bandwidth transmission medium, and the transmitted image is decompressed using an algorithm which is an inverse of the predefined compression algorithm (such as reverse JPEG). The decompressed, reduced image is then interpolated back to its original array size. Edges (contours) in the image are then sharpened to enhance the perceptual quality of the reconstructed image. Specific sharpening techniques are described.

  18. VISAR: Line-imaging interferometer

    SciTech Connect (OSTI)

    Hemsing, W.F.; Mathews, A.R.; Warnes, R.H.; George, M.J.; Whittemore, G.R.

    1991-01-01T23:59:59.000Z

    A line-imaging Velocity Interferometer System for Any Reflector (VISAR) was applied to measure velocity across the diameter of a metal plate explosively accelerated to 5.5 km/s. Amplified, single- frequency laser light was focused to illuminate a line on the metal surface. The line's image was focused through the interferometer to a streak camera that swept in time and recorded directly on film. During the experiment, the Doppler-shift caused motion of the interference fringes. Analysis of the digitized film record yielded a continuum of time-resolved velocity histories. Velocity gradients across the plate that first swept radially inward, then reflected outward, were clearly measured. Increased power provided by the laser amplifier greatly improved the signal-to-noise ratio compared to our previous line VISAR experiments. 5 refs., 8 figs.

  19. Dynamic imaging with electron microscopy

    ScienceCinema (OSTI)

    Campbell, Geoffrey; McKeown, Joe; Santala, Melissa

    2014-05-30T23:59:59.000Z

    Livermore researchers have perfected an electron microscope to study fast-evolving material processes and chemical reactions. By applying engineering, microscopy, and laser expertise to the decades-old technology of electron microscopy, the dynamic transmission electron microscope (DTEM) team has developed a technique that can capture images of phenomena that are both very small and very fast. DTEM uses a precisely timed laser pulse to achieve a short but intense electron beam for imaging. When synchronized with a dynamic event in the microscope's field of view, DTEM allows scientists to record and measure material changes in action. A new movie-mode capability, which earned a 2013 R&D 100 Award from R&D Magazine, uses up to nine laser pulses to sequentially capture fast, irreversible, even one-of-a-kind material changes at the nanometer scale. DTEM projects are advancing basic and applied materials research, including such areas as nanostructure growth, phase transformations, and chemical reactions.

  20. Collaborative Initiative in Biomedical Imaging to Study Complex Diseases

    SciTech Connect (OSTI)

    Lin, Weili [The University of North Carolina at Chapel Hill; Fiddy, Michael A. [The University of North Carolina at Charlotte

    2012-03-31T23:59:59.000Z

    The work reported addressed these topics: Fluorescence imaging; Optical coherence tomography; X-ray interferometer/phase imaging system; Quantitative imaging from scattered fields, Terahertz imaging and spectroscopy; and Multiphoton and Raman microscopy.

  1. Ultraviolet imaging of hydrogen flames

    SciTech Connect (OSTI)

    Yates, G.J.; Wilke, M.; King, N.

    1988-01-01T23:59:59.000Z

    We have assembled an ultraviolet-sensitive intensified camera for observing hydrogen combustion by imaging the OH, A/sup 2/..sigma.. - X/sup 2//Pi/ bandhead emissions near 309 nm. The camera consists of a quartz and CaF achromat lense-coupled to an ultraviolet image intensifier which is in turn fiber-coupled to a focus projection scan (FPS) vidicon. The emission band is selected with interference filters which serve to discriminate against background. The camera provides optical gain of 100 to 1000 and is capable of being shuttered at nanosecond speeds and of being framed at over 600 frames per second. We present data from observations of test flames in air at standard RS-170 video rates with varying background conditions. Enhanced images using background subtraction are presented. Finally, we discuss the use of polarizaton effects to further discrimination against sky background. This work began as a feasibility study to investigate ultraviolet technology to detect hydrogen fires for the NASA space program. 6 refs., 7 figs, 2 tabs.

  2. VLBI Imaging of Seyfert Galaxies

    E-Print Network [OSTI]

    James S. Ulvestad

    2003-01-05T23:59:59.000Z

    The advent of the Very Long Baseline Array and its phase-referencing capability have enabled milliarcsecond-scale imaging of radio sources at sub-millijansky sensitivity, opening the door to high-resolution imaging of Seyfert galaxies. Over the last few years, this has led to a number of interesting new results that shed light on the characteristics of the inner cores of Seyfert galaxies. These include the following: (1) classical Seyfert galaxies with steep radio spectra have a strong tendency to exhibit radio jets at milliarcsecond scales, sometimes with considerable curvature in the jets; (2) apparent speeds of jets imaged at multiple epochs generally are considerably less than c, often in the vicinity of 0.1c or less, although there sometimes are faster motions seen after strong outbursts; and (3) lower luminosity Seyfert galaxies have a much stronger tendency to show flat or somewhat inverted radio spectra, usually are unresolved on milliarcsecond scales, and probably are dominated by a combination of low-radiative-efficiency accretion flows and very compact radio jets. This paper discusses some examples that illustrate these properties, and summarizes some of what we have learned about weak active galaxies on milliarcsecond scales.

  3. Image Resolution in Scanning Transmission Electron Microscopy

    SciTech Connect (OSTI)

    Pennycook, S. J.; Lupini, A.R.

    2008-06-26T23:59:59.000Z

    Digital images captured with electron microscopes are corrupted by two fundamental effects: shot noise resulting from electron counting statistics and blur resulting from the nonzero width of the focused electron beam. The generic problem of computationally undoing these effects is called image reconstruction and for decades has proved to be one of the most challenging and important problems in imaging science. This proposal concerned the application of the Pixon method, the highest-performance image-reconstruction algorithm yet devised, to the enhancement of images obtained from the highest-resolution electron microscopes in the world, now in operation at Oak Ridge National Laboratory.

  4. Image display device in digital TV

    DOE Patents [OSTI]

    Choi, Seung Jong (Seoul, KR)

    2006-07-18T23:59:59.000Z

    Disclosed is an image display device in a digital TV that is capable of carrying out the conversion into various kinds of resolution by using single bit map data in the digital TV. The image display device includes: a data processing part for executing bit map conversion, compression, restoration and format-conversion for text data; a memory for storing the bit map data obtained according to the bit map conversion and compression in the data processing part and image data inputted from an arbitrary receiving part, the receiving part receiving one of digital image data and analog image data; an image outputting part for reading the image data from the memory; and a display processing part for mixing the image data read from the image outputting part and the bit map data converted in format from the a data processing part. Therefore, the image display device according to the present invention can convert text data in such a manner as to correspond with various resolution, carry out the compression for bit map data, thereby reducing the memory space, and support text data of an HTML format, thereby providing the image with the text data of various shapes.

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    system specified in Permit Attachment G1 (Detailed Design Report for an Operation Phase Panel Closure System). 1.5.16. Filled Panel "Filled panel" means an Underground...

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    the two end holes 1 ca. 1790-1890s (peak production) 33PK213 511 3 A Metal Unidentified Automotive emblem Whole Marked -PLYMOUTH over a sailing ship 1 33PK213 512 3 A Metal...

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  5. Selective document image data compression technique

    DOE Patents [OSTI]

    Fu, C.Y.; Petrich, L.I.

    1998-05-19T23:59:59.000Z

    A method of storing information from filled-in form-documents comprises extracting the unique user information in the foreground from the document form information in the background. The contrast of the pixels is enhanced by a gamma correction on an image array, and then the color value of each of pixel is enhanced. The color pixels lying on edges of an image are converted to black and an adjacent pixel is converted to white. The distance between black pixels and other pixels in the array is determined, and a filled-edge array of pixels is created. User information is then converted to a two-color format by creating a first two-color image of the scanned image by converting all pixels darker than a threshold color value to black. All the pixels that are lighter than the threshold color value to white. Then a second two-color image of the filled-edge file is generated by converting all pixels darker than a second threshold value to black and all pixels lighter than the second threshold color value to white. The first two-color image and the second two-color image are then combined and filtered to smooth the edges of the image. The image may be compressed with a unique Huffman coding table for that image. The image file is also decimated to create a decimated-image file which can later be interpolated back to produce a reconstructed image file using a bilinear interpolation kernel. 10 figs.

  6. Quantitative imaging of turbulent and reacting flows

    SciTech Connect (OSTI)

    Paul, P.H. [Sandia National Laboratories, Livermore, CA (United States)

    1993-12-01T23:59:59.000Z

    Quantitative digital imaging, using planar laser light scattering techniques is being developed for the analysis of turbulent and reacting flows. Quantitative image data, implying both a direct relation to flowfield variables as well as sufficient signal and spatial dynamic range, can be readily processed to yield two-dimensional distributions of flowfield scalars and in turn two-dimensional images of gradients and turbulence scales. Much of the development of imaging techniques to date has concentrated on understanding the requisite molecular spectroscopy and collision dynamics to be able to determine how flowfield variable information is encoded into the measured signal. From this standpoint the image is seen as a collection of single point measurements. The present effort aims at realizing necessary improvements in signal and spatial dynamic range, signal-to-noise ratio and spatial resolution in the imaging system as well as developing excitation/detection strategies which provide for a quantitative measure of particular flowfield scalars. The standard camera used for the study is an intensified CCD array operated in a conventional video format. The design of the system was based on detailed modeling of signal and image transfer properties of fast UV imaging lenses, image intensifiers and CCD detector arrays. While this system is suitable for direct scalar imaging, derived quantities (e.g. temperature or velocity images) require an exceptionally wide dynamic range imaging detector. To apply these diagnostics to reacting flows also requires a very fast shuttered camera. The authors have developed and successfully tested a new type of gated low-light level detector. This system relies on fast switching of proximity focused image-diode which is direct fiber-optic coupled to a cooled CCD array. Tests on this new detector show significant improvements in detection limit, dynamic range and spatial resolution as compared to microchannel plate intensified arrays.

  7. Document Imaging | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you sure you want toworldPowerHome | DepartmentDeveloperServicesDocument Imaging

  8. Lensless Imaging of Magnetic Nanostructures

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |Is Your HomeLatest News ReleasesDepartmentLending a HandImaging of

  9. Lensless Imaging of Magnetic Nanostructures

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |Is Your HomeLatest News ReleasesDepartmentLending a HandImaging

  10. Lensless Imaging of Magnetic Nanostructures

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5 -ofLearningLensless Imaging of Magnetic

  11. Lensless Imaging of Magnetic Nanostructures

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5 -ofLearningLensless Imaging of MagneticLensless

  12. Lensless Imaging of Magnetic Nanostructures

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5 -ofLearningLensless Imaging of

  13. Hyperspectral Imaging | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup | OpenHunan Runhua New Energy DevelopmentList ofHyperspectral Imaging

  14. Calibration method for video and radiation imagers

    DOE Patents [OSTI]

    Cunningham, Mark F. (Oak Ridge, TN); Fabris, Lorenzo (Knoxville, TN); Gee, Timothy F. (Oak Ridge, TN); Goddard, Jr., James S. (Knoxville, TN); Karnowski, Thomas P. (Knoxville, TN); Ziock, Klaus-peter (Clinton, TN)

    2011-07-05T23:59:59.000Z

    The relationship between the high energy radiation imager pixel (HERIP) coordinate and real-world x-coordinate is determined by a least square fit between the HERIP x-coordinate and the measured real-world x-coordinates of calibration markers that emit high energy radiation imager and reflect visible light. Upon calibration, a high energy radiation imager pixel position may be determined based on a real-world coordinate of a moving vehicle. Further, a scale parameter for said high energy radiation imager may be determined based on the real-world coordinate. The scale parameter depends on the y-coordinate of the moving vehicle as provided by a visible light camera. The high energy radiation imager may be employed to detect radiation from moving vehicles in multiple lanes, which correspondingly have different distances to the high energy radiation imager.

  15. Automated imaging system for single molecules

    DOE Patents [OSTI]

    Schwartz, David Charles; Runnheim, Rodney; Forrest, Daniel

    2012-09-18T23:59:59.000Z

    There is provided a high throughput automated single molecule image collection and processing system that requires minimal initial user input. The unique features embodied in the present disclosure allow automated collection and initial processing of optical images of single molecules and their assemblies. Correct focus may be automatically maintained while images are collected. Uneven illumination in fluorescence microscopy is accounted for, and an overall robust imaging operation is provided yielding individual images prepared for further processing in external systems. Embodiments described herein are useful in studies of any macromolecules such as DNA, RNA, peptides and proteins. The automated image collection and processing system and method of same may be implemented and deployed over a computer network, and may be ergonomically optimized to facilitate user interaction.

  16. Range gated imaging experiments using gated intensifiers

    SciTech Connect (OSTI)

    McDonald, T.E. Jr.; Yates, G.J.; Cverna, F.H.; Gallegos, R.A.; Jaramillo, S.A.; Numkena, D.M.; Payton, J.; Pena-Abeyta, C.R.

    1999-03-01T23:59:59.000Z

    A variety of range gated imaging experiments using high-speed gated/shuttered proximity focused microchannel plate image intensifiers (MCPII) are reported. Range gated imaging experiments were conducted in water for detection of submerged mines in controlled turbidity tank test and in sea water for the Naval Coastal Sea Command/US Marine Corps. Field experiments have been conducted consisting of kilometer range imaging of resolution targets and military vehicles in atmosphere at Eglin Air Force Base for the US Air Force, and similar imaging experiments, but in smoke environment, at Redstone Arsenal for the US Army Aviation and Missile Command (AMCOM). Wavelength of the illuminating laser was 532 nm with pulse width ranging from 6 to 12 ns and comparable gate widths. These tests have shown depth resolution in the tens of centimeters range from time phasing reflected LADAR images with MCPII shutter opening.

  17. Method for position emission mammography image reconstruction

    DOE Patents [OSTI]

    Smith, Mark Frederick

    2004-10-12T23:59:59.000Z

    An image reconstruction method comprising accepting coincidence datat from either a data file or in real time from a pair of detector heads, culling event data that is outside a desired energy range, optionally saving the desired data for each detector position or for each pair of detector pixels on the two detector heads, and then reconstructing the image either by backprojection image reconstruction or by iterative image reconstruction. In the backprojection image reconstruction mode, rays are traced between centers of lines of response (LOR's), counts are then either allocated by nearest pixel interpolation or allocated by an overlap method and then corrected for geometric effects and attenuation and the data file updated. If the iterative image reconstruction option is selected, one implementation is to compute a grid Siddon retracing, and to perform maximum likelihood expectation maiximization (MLEM) computed by either: a) tracing parallel rays between subpixels on opposite detector heads; or b) tracing rays between randomized endpoint locations on opposite detector heads.

  18. Cancer Imaging Clinical Cancer Research

    E-Print Network [OSTI]

    Near Ir; Heptamethine Cyanine Dye–mediated; Xiaojian Yang; Chunmeng Shi; Rong Tong; Weiping Qian; Haiyen E. Zhau; Ruoxiang Wang; Guodong Zhu; Jianjun Cheng; Vincent W. Yang; Tianmin Cheng; Maged Henary; Lucjan Strekowski; W. K. Chung

    Purpose: Near-IR fluorescence imaging has great potential for noninvasive in vivo imaging of tumors. In this study, we show the preferential uptake and retention of two hepatamethine cyanine dyes, IR-783 and MHI-148, in tumor cells and tissues. Experimental Design: IR-783 and MHI-148 were investigated for their ability to accumulate in human cancer cells, tumor xenografts, and spontaneous mouse tumors in transgenic animals. Time- and concentration-dependent dye uptake and retention in normal and cancer cells and tissues were compared, and subcellular localization of the dyes and mechanisms of the dye uptake and retention in tumor cells were evaluated using organelle-specific tracking dyes and bromosulfophthalein, a competitive inhibitor of organic anion transporting peptides. These dyes were used to detect human cancer metastases in a mouse model and differentiate cancer cells from normal cells in blood. Results: These near-IR hepatamethine cyanine dyes were retained in cancer cells but not normal cells, in tumor xenografts, and in spontaneous tumors in transgenic mice. They can be used to detect cancer metastasis and cancer cells in blood with a high degree of sensitivity. The dyes were found to concentrate in the mitochondria and lysosomes of cancer cells, probably through organic anion transporting peptides,

  19. Coherent hybrid electromagnetic field imaging

    DOE Patents [OSTI]

    Cooke, Bradly J. (Jemez Springs, NM); Guenther, David C. (Los Alamos, NM)

    2008-08-26T23:59:59.000Z

    An apparatus and corresponding method for coherent hybrid electromagnetic field imaging of a target, where an energy source is used to generate a propagating electromagnetic beam, an electromagnetic beam splitting means to split the beam into two or more coherently matched beams of about equal amplitude, and where the spatial and temporal self-coherence between each two or more coherently matched beams is preserved. Two or more differential modulation means are employed to modulate each two or more coherently matched beams with a time-varying polarization, frequency, phase, and amplitude signal. An electromagnetic beam combining means is used to coherently combine said two or more coherently matched beams into a coherent electromagnetic beam. One or more electromagnetic beam controlling means are used for collimating, guiding, or focusing the coherent electromagnetic beam. One or more apertures are used for transmitting and receiving the coherent electromagnetic beam to and from the target. A receiver is used that is capable of square-law detection of the coherent electromagnetic beam. A waveform generator is used that is capable of generation and control of time-varying polarization, frequency, phase, or amplitude modulation waveforms and sequences. A means of synchronizing time varying waveform is used between the energy source and the receiver. Finally, a means of displaying the images created by the interaction of the coherent electromagnetic beam with target is employed.

  20. Spectroscopic imaging in electron microscopy

    SciTech Connect (OSTI)

    Pennycook, Stephen J [ORNL; Colliex, C. [Universite Paris Sud, Orsay, France

    2012-01-01T23:59:59.000Z

    In the scanning transmission electron microscope, multiple signals can be simultaneously collected, including the transmitted and scattered electron signals (bright field and annular dark field or Z-contrast images), along with spectroscopic signals such as inelastically scattered electrons and emitted photons. In the last few years, the successful development of aberration correctors for the electron microscope has transformed the field of electron microscopy, opening up new possibilities for correlating structure to functionality. Aberration correction not only allows for enhanced structural resolution with incident probes into the sub-angstrom range, but can also provide greater probe currents to facilitate mapping of intrinsically weak spectroscopic signals at the nanoscale or even the atomic level. In this issue of MRS Bulletin, we illustrate the power of the new generation of electron microscopes with a combination of imaging and spectroscopy. We show the mapping of elemental distributions at atomic resolution and also the mapping of electronic and optical properties at unprecedented spatial resolution, with applications ranging from graphene to plasmonic nanostructures, and oxide interfaces to biology.

  1. Positron emission tomography and optical tissue imaging

    DOE Patents [OSTI]

    Falen, Steven W. (Carmichael, CA); Hoefer, Richard A. (Newport News, VA); Majewski, Stanislaw (Yorktown, VA); McKisson, John (Hampton, VA); Kross, Brian (Yorktown, VA); Proffitt, James (Newport News, VA); Stolin, Alexander (Newport News, VA); Weisenberger, Andrew G. (Yorktown, VA)

    2012-05-22T23:59:59.000Z

    A mobile compact imaging system that combines both PET imaging and optical imaging into a single system which can be located in the operating room (OR) and provides faster feedback to determine if a tumor has been fully resected and if there are adequate surgical margins. While final confirmation is obtained from the pathology lab, such a device can reduce the total time necessary for the procedure and the number of iterations required to achieve satisfactory resection of a tumor with good margins.

  2. Atomic resolution images of graphite in air

    SciTech Connect (OSTI)

    Grigg, D.A.; Shedd, G.M.; Griffis, D.; Russell, P.E.

    1988-12-01T23:59:59.000Z

    One sample used for proof of operation for atomic resolution in STM is highly oriented pyrolytic graphite (HOPG). This sample has been imaged with many different STM`s obtaining similar results. Atomic resolution images of HOPG have now been obtained using an STM designed and built at the Precision Engineering Center. This paper discusses the theoretical predictions and experimental results obtained in imaging of HOPG.

  3. Compact reflective imaging spectrometer utilizing immersed gratings

    DOE Patents [OSTI]

    Chrisp, Michael P. (Danville, CA)

    2006-05-09T23:59:59.000Z

    A compact imaging spectrometer comprising an entrance slit for directing light, a first mirror that receives said light and reflects said light, an immersive diffraction grating that diffracts said light, a second mirror that focuses said light, and a detector array that receives said focused light. The compact imaging spectrometer can be utilized for remote sensing imaging spectrometers where size and weight are of primary importance.

  4. University of Vermont Center for Biomedical Imaging

    SciTech Connect (OSTI)

    Bernstein, Dr. Ira [University of Vermont and State Agricultural College

    2013-08-02T23:59:59.000Z

    This grant was awarded in support of Phase 2 of the University of Vermont Center for Biomedical Imaging. Phase 2 outlined several specific aims including: The development of expertise in MRI and fMRI imaging and their applications The acquisition of peer reviewed extramural funding in support of the Center The development of a Core Imaging Advisory Board, fee structure and protocol review and approval process.

  5. Precursors to radiopharmaceutical agents for tissue imaging

    DOE Patents [OSTI]

    Srivastava, Prem C. (Oak Ridge, TN); Knapp, Jr., Furn F. (Oak Ridge, TN)

    1988-01-01T23:59:59.000Z

    A class of radiolabeled compounds to be used in tissue imaging that exhibits rapid brain uptake, good brain:blood radioactivity ratios, and long retention times. The imaging agents are more specifically radioiodinated aromatic amines attached to dihydropyridine carriers, that exhibit heart as well as brain specificity. In addition to the radiolabeled compounds, classes of compounds are also described that are used as precursors and intermediates in the preparation of the imaging agents.

  6. Heat Loss Measurement Using Infrared Imaging

    E-Print Network [OSTI]

    Seeber, S. A.

    1983-01-01T23:59:59.000Z

    levels for objects seen in the CRT. (Radiance levels refer to the amount of infrared energy produced by an object.) The conversion of these radiance compari sons to temperatures and heat flows will be discussed below. Infrared images may be recorded... radiance level comparisons since colors may be associated with particular temperature ranges. Black and white images may be colorized during the inspection process. Alternatively, the black and white images may be stored on magnetic tape and color...

  7. Remote sensing, imaging, and signal engineering

    SciTech Connect (OSTI)

    Brase, J.M.

    1993-03-01T23:59:59.000Z

    This report discusses the Remote Sensing, Imaging, and Signal Engineering (RISE) trust area which has been very active in working to define new directions. Signal and image processing have always been important support for existing programs at Lawrence Livermore National Laboratory (LLNL), but now these technologies are becoming central to the formation of new programs. Exciting new applications such as high-resolution telescopes, radar remote sensing, and advanced medical imaging are allowing us to participate in the development of new programs.

  8. EIS - An Imaging Survey for VLT Science

    E-Print Network [OSTI]

    Luiz da Costa

    1999-05-18T23:59:59.000Z

    The imaging data assembled by the recently completed ESO Imaging Survey (EIS) are reviewed and their scientific value briefly assessed. Among the various applications, the imaging data has been used to build a large sample of candidate distant clusters of galaxies in the Southern Hemisphere to be used for follow-up observations with the VLT as well as other space and ground-based facilities. Preliminary results from ongoing work to confirm these candidates are reported and the future prospects discussed.

  9. An Imaging Fourier Transform Spectrometer for NGST

    E-Print Network [OSTI]

    James R. Graham

    1999-07-18T23:59:59.000Z

    Due to its simultaneous deep imaging and integral field spectroscopic capability, an Imaging Fourier Transform Spectrograph (IFTS) is ideally suited to the Next Generation Space Telescope (NGST) mission, and offers opportunities for tremendous scientific return in many fields of astrophysical inquiry. We describe the operation and quantify the advantages of an IFTS for space applications. The conceptual design of the Integral Field Infrared Spectrograph (IFIRS) is a wide field (5'.3 x 5'.3) four-port imaging Michelson interferometer.

  10. Polarization imaging apparatus with auto-calibration

    DOE Patents [OSTI]

    Zou, Yingyin Kevin; Zhao, Hongzhi; Chen, Qiushui

    2013-08-20T23:59:59.000Z

    A polarization imaging apparatus measures the Stokes image of a sample. The apparatus consists of an optical lens set, a first variable phase retarder (VPR) with its optical axis aligned 22.5.degree., a second variable phase retarder with its optical axis aligned 45.degree., a linear polarizer, a imaging sensor for sensing the intensity images of the sample, a controller and a computer. Two variable phase retarders were controlled independently by a computer through a controller unit which generates a sequential of voltages to control the phase retardations of the first and second variable phase retarders. A auto-calibration procedure was incorporated into the polarization imaging apparatus to correct the misalignment of first and second VPRs, as well as the half-wave voltage of the VPRs. A set of four intensity images, I.sub.0, I.sub.1, I.sub.2 and I.sub.3 of the sample were captured by imaging sensor when the phase retardations of VPRs were set at (0,0), (.pi.,0), (.pi.,.pi.) and (.pi./2,.pi.), respectively. Then four Stokes components of a Stokes image, S.sub.0, S.sub.1, S.sub.2 and S.sub.3 were calculated using the four intensity images.

  11. Photoacoustic phasoscopy super-contrast imaging

    SciTech Connect (OSTI)

    Gao, Fei; Feng, Xiaohua; Zheng, Yuanjin, E-mail: yjzheng@ntu.edu.sg [School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798 (Singapore)

    2014-05-26T23:59:59.000Z

    Phasoscopy is a recently proposed concept correlating electromagnetic (EM) absorption and scattering properties based on energy conservation. Phase information can be extracted from EM absorption induced acoustic wave and scattered EM wave for biological tissue characterization. In this paper, an imaging modality, termed photoacoustic phasoscopy imaging (PAPS), is proposed and verified experimentally based on phasoscopy concept with laser illumination. Both endogenous photoacoustic wave and scattered photons are collected simultaneously to extract the phase information. The PAPS images are then reconstructed on vessel-mimicking phantom and ex vivo porcine tissues to show significantly improved contrast than conventional photoacoustic imaging.

  12. Interactive image processing console A6471

    SciTech Connect (OSTI)

    Kempe, V.; Rebel, B.; Wilhelmi, W.

    1982-01-01T23:59:59.000Z

    Many system designs and implementations of image processors have been published and discussed to which the authors add another one promising a good compromise between speed, flexibility, and costs. Its main components are programmable semiconductor image refresh memories and a fast parallel processor both acting at TV scan velocity. They are embedded in a 16-bit microcomputer system which interfaces them to the user and the programmer. Special features are the possibility to share the image memories between some systems and a crossconnection between image processor and graphic data. A glance onto the programming techniques is given. Prototypes of such a system are operating in remote sensing and biomedical applications. 6 references.

  13. Jefferson Lab Detector and Imaging Group

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    web standards, but its content is accessible to any browser. Concerns? Nuclear Physics Program print version LINKS Detector & Imaging Home Overview Staff News Advanced...

  14. Imaging and sensing based on muon tomography

    DOE Patents [OSTI]

    Morris, Christopher L; Saunders, Alexander; Sossong, Michael James; Schultz, Larry Joe; Green, J. Andrew; Borozdin, Konstantin N; Hengartner, Nicolas W; Smith, Richard A; Colthart, James M; Klugh, David C; Scoggins, Gary E; Vineyard, David C

    2012-10-16T23:59:59.000Z

    Techniques, apparatus and systems for detecting particles such as muons for imaging applications. Subtraction techniques are described to enhance the processing of the muon tomography data.

  15. Tissue Imaging Using Nanospray Desorption Electrospray Ionization...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    drug discovery, molecular biology, and biochemistry. Citation: Laskin J, BS Heath, PJ Roach, LH Cazares, and OJ Semmes.2012."Tissue Imaging Using Nanospray Desorption...

  16. Light propagation and Imaging in Indefinite Metamaterials

    E-Print Network [OSTI]

    Yao, Jie

    2010-01-01T23:59:59.000Z

    photolithography by polarized light,” Applied PhysicsZhang, “Imaging visible light using anisotropic metamaterialcross-sectional review of the light propagation of TE mode (

  17. Imaging - Clearer brain scans ... | ornl.gov

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Imaging - Clearer brain scans ... A clever signal noise reduction strategy developed by a team that includes Oak Ridge National Laboratory's Ben Lawrie could dramatically improve...

  18. Nanoscale Chemical Imaging of a Working Catalyst

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    from electron microscopy to identify the chemical species present for an iron-based Fischer-Tropsch synthesis catalyst and to image their distribution on the nanoscale. When...

  19. Thermal Imaging Technologies | GE Global Research

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Enables Advanced Thermal Imaging An error occurred. Unable to execute Javascript. Bryan Whalen in the Electronics Cooling Lab at GE Global Research recorded this thermo...

  20. Broadband diffractive lens or imaging element

    DOE Patents [OSTI]

    Ceglio, Natale M. (Livermore, CA); Hawryluk, Andrew M. (Modesto, CA); London, Richard A. (Oakland, CA); Seppala, Lynn G. (Livermore, CA)

    1991-01-01T23:59:59.000Z

    A broadband diffractive lens or imaging element produces a sharp focus and/or a high resolution image with broad bandwidth illuminating radiation. The diffractive lens is sectored or segmented into regions, each of which focuses or images a distinct narrowband of radiation but all of which have a common focal length. Alternatively, a serial stack of minus filters, each with a diffraction pattern which focuses or images a distinct narrowband of radiation but all of which have a common focal length, is used. The two approaches can be combined. Multifocal broadband diffractive elements can also be formed.

  1. Broadband diffractive lens or imaging element

    DOE Patents [OSTI]

    Ceglio, N.M.; Hawryluk, A.M.; London, R.A.; Seppala, L.G.

    1993-10-26T23:59:59.000Z

    A broadband diffractive lens or imaging element produces a sharp focus and/or a high resolution image with broad bandwidth illuminating radiation. The diffractive lens is sectored or segmented into regions, each of which focuses or images a distinct narrowband of radiation but all of which have a common focal length. Alternatively, a serial stack of minus filters, each with a diffraction pattern which focuses or images a distinct narrowband of radiation but all of which have a common focal length, is used. The two approaches can be combined. Multifocal broadband diffractive elements can also be formed. Thin film embodiments are described. 21 figures.

  2. Broadband diffractive lens or imaging element

    DOE Patents [OSTI]

    Ceglio, Natale M. (Livermore, CA); Hawryluk, Andrew M. (Modesto, CA); London, Richard A. (Oakland, CA); Seppala, Lynn G. (Livermore, CA)

    1993-01-01T23:59:59.000Z

    A broadband diffractive lens or imaging element produces a sharp focus and/or a high resolution image with broad bandwidth illuminating radiation. The diffractive lens is sectored or segmented into regions, each of which focuses or images a distinct narrowband of radiation but all of which have a common focal length. Alternatively, a serial stack of minus filters, each with a diffraction pattern which focuses or images a distinct narrowband of radiation but all of which have a common focal length, is used. The two approaches can be combined. Multifocal broadband diffractive elements can also be formed. Thin film embodiments are described.

  3. Interleaved Imaging: An Imaging System Design Inspired by Rod-Cone Vision

    E-Print Network [OSTI]

    Wandell, Brian A.

    play a role in adapting to light-levels;1 these include regulation of the pupil and scaling out with the ISET imaging pipeline simulator5 ). The image on the right simulates an identical

  4. Towards Recovering the Broken SOA Triangle A Software Engineering Perspective

    E-Print Network [OSTI]

    Dustdar, Schahram

    of the service. Service Contract Service Registry Service Provider Service Requestor Bind RegisterFind (a) SOA Theory Service Contract Service Provider Service Requestor Bind (b) SOA Practice Figure 1: Basic SOA

  5. Algorithmic Reconstruction of Broken Fragments Steven Eliuk, Pierre Boulanger

    E-Print Network [OSTI]

    Alberta, University of

    virtual objects with 3D printers, in the event that a physical model is needed. Through 3D representation The importance of computers in archeology is becoming more apparent due to the increased demand for 3D digital that one can work with a 3D digital scan more easily on a computer. The scale of the site or object can

  6. Some characteristics of waves broken by a longshore bar

    E-Print Network [OSTI]

    McNair, Ernest Clark

    1970-01-01T23:59:59.000Z

    versi. Ly. iv!onochromati c & gravity matc! waves a!ere ge!crated toward this bar formation. The waves broke as they passed over the bar and then re-formed as they entered the deeper water in the lee of' the bar. Recordings of the vrater-surface time... water level; a a:id b are i&oui". '~cr cocf'- "n n ficients; ii Is an int gcr co"tqicicn4; aii&I o is the angular fre- quency. IIg ihc application oi. ' Lhc Farscval 4I&eor" irr f' or. pcrioriic f'unciici. ons (ri) & T && Pg ~(*)? dt E. -r I T 0 7...

  7. Solving the broken link problem in Walden's Paths

    E-Print Network [OSTI]

    Dalal, Zubin Jamshed

    2004-09-30T23:59:59.000Z

    the path author with a wide range of choices. The algorithm would support search engines by Google4, Yahoo5, MSN6 and Altavista7. 4http://www.google.com 5http://new.search.yahoo.com 6http://search.msn.com 7http://www.altavista.com 26 A verbose... keeping track of all the documents that link to the page and notifying them with the page?s new location at migration time. The main drawback of the abovementioned methods 1http://www.ietf.com/html.charters/urn-charter.html 12 is that even...

  8. Ground Broken for New Job-Creating Accelerator Research Facility...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    our nation in the areas of sustainable energy, a cleaner environment, economic security, health care and national defense. The accelerators of tomorrow have the potential to make...

  9. Broken Isotropy from a Linear Modulation of the Primordial Perturbations

    E-Print Network [OSTI]

    Christopher Gordon

    2006-10-30T23:59:59.000Z

    A linear modulation of the primordial perturbations is proposed as an explanation for the observed asymmetry between the northern and southern hemispheres of the Wilkinson Microwave Anisotropy Probe (WMAP) data. A cut sky, reduced resolution third year "Internal Linear Combination" (ILC) map was used to estimate the modulation parameters. A foreground template and a modulated plus unmodulated monopole and dipole were projected out of the likelihood. The effective chi squared is reduced by nine for three extra parameters. The mean Galactic colatitude and longitude, of the modulation, with 68%, 95% and 99.7% confidence intervals were 56^{+17 +36 +65}_{-17 -35 -51} and 63^{+28 +59 +105}_{-26 -58 -213}. The mean percentage change of the variance, across the pole's of the modulation, was 62^{+18 +35 +57}_{-18 -35 -47}. Implications of these results and possible generating mechanisms are discussed.

  10. Born Broken: Fonts and Information Loss in Legacy Digital Documents

    E-Print Network [OSTI]

    Brown, Geoffrey; Woods, Kam

    2009-01-01T23:59:59.000Z

    ACM conference on Digital libraries, 152–161. New York, NY,joint conference on Digital libraries, 86–94. New York, NY,

  11. Beyond spontaneously broken symmetry in Bose-Einstein condensates

    E-Print Network [OSTI]

    W. J. Mullin; F. Laloë

    2009-12-31T23:59:59.000Z

    Spontaneous symmetry breaking (SSB) for Bose-Einstein condensates cannot treat phase off-diagonal effects, and thus not explain Bell inequality violations. We describe another situation that is beyond a SSB treatment: an experiment where particles from two (possibly macroscopic) condensate sources are used for conjugate measurements of the relative phase and populations. Off-diagonal phase effects are characterized by a "quantum angle" and observed via "population oscillations", signaling quantum interference of macroscopically distinct states (QIMDS).

  12. Broken Arrow, Oklahoma: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:EzfeedflagBiomassSustainable and Innovative EnergyHeights, Ohio:Brodhead,

  13. Broken Bow, Nebraska: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:EzfeedflagBiomassSustainable and Innovative EnergyHeights, Ohio:Brodhead,Bow, Nebraska: Energy

  14. Posters Mean Fluxes of Visible Solar Radiation in Broken Clouds

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah Project Office PressPostdoctoraldecadal observations7197 Posters

  15. Particle-hole symmetry broken pseudogap in high temperature superconductors

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for RenewableSpeedingBiomassPPPO WebsitePalms Village Resort BParticle September 11,

  16. Yoichiro Nambu and the Mechanism of Spontaneous Broken Symmetries in

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del SolStrengtheningWildfires may contributeSecuritysupports

  17. Anisotropy in Broken Cloud Fields Over Oklahoma from Ladsat Data

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041cloth DocumentationProductsAlternative FuelsSanta3 Table 3. SummaryAncientAndreaAndrew19

  18. Observation of the proton aurora with IMAGE FUV imager and simultaneous ion flux in situ measurements

    E-Print Network [OSTI]

    California at Berkeley, University of

    Observation of the proton aurora with IMAGE FUV imager and simultaneous ion flux in situ satellite images the aurora in three different spectral regions. One of the channels of the spectrographic to spectrally discriminate between the proton and electron FUV aurora and to globally map the energetic protons

  19. Image-Based Texture Replacement Using Multiview Images Technion Israel Inst. of Technology

    E-Print Network [OSTI]

    Tal, Ayellet

    Image-Based Texture Replacement Using Multiview Images Doron Tal Technion ­ Israel Inst replacement is one such task. It is the process of painting a new texture over an ex- isting textured image for perform- ing texture replacement, which is based on multiview stereo tech- niques that produce depth

  20. MARKOV RANDOM FIELD IMAGE PRIOR MODELS FOR MAP RECONSTRUCTION OF MAGNETOENCEPHALOGRAM IMAGES

    E-Print Network [OSTI]

    Wirthlin, Michael J.

    MARKOV RANDOM FIELD IMAGE PRIOR MODELS FOR MAP RECONSTRUCTION OF MAGNETOENCEPHALOGRAM IMAGES Brian as a classical inverse imaging prob- lem, which for MEG is notoriously ill posed and requires strong sam- ple grid. The second model permits simulating an MRF over the non-uniform grid required

  1. Evaluation of Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) and Moderate Resolution Imaging Spectrometer

    E-Print Network [OSTI]

    Evaluation of Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) and Moderate Resolution the Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) and the Moderate Resolution Imaging Spectrometer (MODIS). Key goals were to assess the nature of these relationships as they varied between sensors

  2. Imaging system for cardiac planar imaging using a dedicated dual-head gamma camera

    DOE Patents [OSTI]

    Majewski, Stanislaw (Morgantown, VA); Umeno, Marc M. (Woodinville, WA)

    2011-09-13T23:59:59.000Z

    A cardiac imaging system employing dual gamma imaging heads co-registered with one another to provide two dynamic simultaneous views of the heart sector of a patient torso. A first gamma imaging head is positioned in a first orientation with respect to the heart sector and a second gamma imaging head is positioned in a second orientation with respect to the heart sector. An adjustment arrangement is capable of adjusting the distance between the separate imaging heads and the angle between the heads. With the angle between the imaging heads set to 180 degrees and operating in a range of 140-159 keV and at a rate of up to 500kHz, the imaging heads are co-registered to produce simultaneous dynamic recording of two stereotactic views of the heart. The use of co-registered imaging heads maximizes the uniformity of detection sensitivity of blood flow in and around the heart over the whole heart volume and minimizes radiation absorption effects. A normalization/image fusion technique is implemented pixel-by-corresponding pixel to increase signal for any cardiac region viewed in two images obtained from the two opposed detector heads for the same time bin. The imaging system is capable of producing enhanced first pass studies, bloodpool studies including planar, gated and non-gated EKG studies, planar EKG perfusion studies, and planar hot spot imaging.

  3. HDR IMAGE CONSTRUCTION FROM MULTI-EXPOSED STEREO LDR IMAGES Ning Sun, Hassan Mansour, Rabab Ward

    E-Print Network [OSTI]

    Mansour, Hassan

    HDR IMAGE CONSTRUCTION FROM MULTI-EXPOSED STEREO LDR IMAGES Ning Sun, Hassan Mansour, Rabab Ward algorithms. Index Terms-- High dynamic range imaging, stereo matching. 1. INTRODUCTION Typical CCD or CMOS a long time to capture the full dynamic range. Therefore, there is a need for low cost solutions that can

  4. Optics -Laser Doppler Imaging. As the name suggests,LDI,Laser Doppler Imaging exploits the Doppler

    E-Print Network [OSTI]

    Floreano, Dario

    Optics - Laser Doppler Imaging. As the name suggests,LDI,Laser Doppler Imaging exploits the Doppler effect to generate images,in this case of red blood cells moving within the microcirculatory system the Doppler shifted light we obtain information on all the red cells moving in the illuminated tissue,hence we

  5. Comparison of Long-Wave Infrared Imaging and Visible/Near-Infrared Imaging of Vegetation for

    E-Print Network [OSTI]

    Lawrence, Rick L.

    Comparison of Long-Wave Infrared Imaging and Visible/Near-Infrared Imaging of Vegetation using spectral imaging. This has been accom- plished with both visible/near-infrared (Vis/NIR) sunlight reflection and long-wave infrared (LWIR) thermal emission. During a 4-week period in summer 2011

  6. He Lung Imaging in an Open Access, Very-Low-Field Human Magnetic Resonance Imaging System

    E-Print Network [OSTI]

    Walsworth, Ronald L.

    3 He Lung Imaging in an Open Access, Very-Low-Field Human Magnetic Resonance Imaging System R. W. Butler,6 F. W. Hersman,4 and R. L. Walsworth1 The human lung and its functions are extremely sensitive lung restrict sub- jects to lying horizontally. Imaging of human lungs using inhaled laser-polarized 3

  7. Deep Illumination Angular Domain Imaging within Highly Scattering Media Enhanced by Image Processing

    E-Print Network [OSTI]

    Chapman, Glenn H.

    tissue damage and increasing cancer risks proportionate to the cumulative dose of radiation applied [2 techniques to enhance the spatial image resolution and image contrast and to reduce noise. Keywords: Optical tomography, Angular Domain Imaging, Deep Illumination, Lasers, Tissue Optics, angular filter, Silicon

  8. Faraday imaging at high temperatures

    DOE Patents [OSTI]

    Hackel, L.A.; Reichert, P.

    1997-03-18T23:59:59.000Z

    A Faraday filter rejects background light from self-luminous thermal objects, but transmits laser light at the passband wavelength, thus providing an ultra-narrow optical bandpass filter. The filter preserves images so a camera looking through a Faraday filter at a hot target illuminated by a laser will not see the thermal radiation but will see the laser radiation. Faraday filters are useful for monitoring or inspecting the uranium separator chamber in an atomic vapor laser isotope separation process. Other uses include viewing welds, furnaces, plasma jets, combustion chambers, and other high temperature objects. These filters are can be produced at many discrete wavelengths. A Faraday filter consists of a pair of crossed polarizers on either side of a heated vapor cell mounted inside a solenoid. 3 figs.

  9. Faraday imaging at high temperatures

    DOE Patents [OSTI]

    Hackel, Lloyd A. (Livermore, CA); Reichert, Patrick (Hayward, CA)

    1997-01-01T23:59:59.000Z

    A Faraday filter rejects background light from self-luminous thermal objects, but transmits laser light at the passband wavelength, thus providing an ultra-narrow optical bandpass filter. The filter preserves images so a camera looking through a Faraday filter at a hot target illuminated by a laser will not see the thermal radiation but will see the laser radiation. Faraday filters are useful for monitoring or inspecting the uranium separator chamber in an atomic vapor laser isotope separation process. Other uses include viewing welds, furnaces, plasma jets, combustion chambers, and other high temperature objects. These filters are can be produced at many discrete wavelengths. A Faraday filter consists of a pair of crossed polarizers on either side of a heated vapor cell mounted inside a solenoid.

  10. Edge Detection in Digital Image Processing Debosmit Ray

    E-Print Network [OSTI]

    Morrow, James A.

    Edge Detection in Digital Image Processing Debosmit Ray Thursday, June 06, 2013. 1. Introduction In this paper, I discuss the mathematical theorems and algorithms used in image processing. Digital Image Processing is the use of com- puter algorithms to perform image processing on digital images. Since the use

  11. Remote Sensing Ayman F. Habib Image Registration & Rectification

    E-Print Network [OSTI]

    Habib, Ayman

    Remote Sensing Ayman F. Habib 1 Chapter 5 Image Registration & Rectification #12;Remote Sensing: Resampling techniques. #12;Remote Sensing Ayman F. Habib 3 Image Registration #12;Remote Sensing Ayman F be integrated/fused. Object Space Left Image Right Image Image Registration: Objective #12;Remote Sensing Ayman

  12. Remote Sensing Ayman F. Habib Image Registration & Rectification

    E-Print Network [OSTI]

    Habib, Ayman

    1 Remote Sensing Ayman F. Habib 1 Chapter 5 Image Registration & Rectification Remote Sensing Ayman: Resampling techniques. #12;2 Remote Sensing Ayman F. Habib 3 Image Registration Remote Sensing Ayman F. Habib be integrated/fused. Object Space Left Image Right Image Image Registration: Objective #12;3 Remote Sensing

  13. Compton Dry-Cask Imaging System

    ScienceCinema (OSTI)

    None

    2013-05-28T23:59:59.000Z

    The Compton-Dry Cask Imaging Scanner is a system that verifies and documents the presence of spent nuclear fuel rods in dry-cask storage and determines their isotopic composition without moving or opening the cask. For more information about this project, visit http://www.inl.gov/rd100/2011/compton-dry-cask-imaging-system/

  14. Compton Dry-Cask Imaging System

    SciTech Connect (OSTI)

    None

    2011-01-01T23:59:59.000Z

    The Compton-Dry Cask Imaging Scanner is a system that verifies and documents the presence of spent nuclear fuel rods in dry-cask storage and determines their isotopic composition without moving or opening the cask. For more information about this project, visit http://www.inl.gov/rd100/2011/compton-dry-cask-imaging-system/

  15. Image Fusion for MR Bias Correction

    E-Print Network [OSTI]

    Willsky, Alan S.

    . For example, for fast-spin echo (FSE) pulse sequences, the MR signal is given by this equation: · Target T1Image Fusion for MR Bias Correction Ayres Fan Stochastic Systems Group Joint work with W. Wells, J strength · Spatially varying field strength encodes spatial location in the frequency domain #12;MR Imaging

  16. BIOSIGNAL 2002 Tagged cardiac MR images analysis

    E-Print Network [OSTI]

    Histace, Aymeric

    in cardiac tagged MR images analysis. 1 Introduction The non invasive assessment of the cardiac functionBIOSIGNAL 2002 Tagged cardiac MR images analysis A. HISTACE, L. HERMAND, C. CAVARO-MENARD LISA used by tagged MRI displays a deformable dark grid which sticks to the contraction of myocardium (fig.1

  17. COMPUTATIONAL IMAGING Berthold K.P. Horn

    E-Print Network [OSTI]

    Treuille, Adrien

    Squares Match in FT #12;Polystyrene Micro Beads (1µm) #12;#12;(2) CODED APERTURE IMAGING · Can't refract or reflect gamma rays · Pinhole -- tradeoff resolution and SNR with: Richard Lanza, Roberto Accorsi, Klaus Ziock, and Lorenzo Fabris. #12;Coded Aperture Imaging · Can't refract or reflect gamma rays · Pinhole

  18. Solid-state NMR imaging system

    DOE Patents [OSTI]

    Gopalsami, Nachappa (Naperville, IL); Dieckman, Stephen L. (Elmhurst, IL); Ellingson, William A. (Naperville, IL)

    1992-01-01T23:59:59.000Z

    An apparatus for use with a solid-state NMR spectrometer includes a special imaging probe with linear, high-field strength gradient fields and high-power broadband RF coils using a back projection method for data acquisition and image reconstruction, and a real-time pulse programmer adaptable for use by a conventional computer for complex high speed pulse sequences.

  19. Frontiers in Chemical Imaging Seminar Series

    E-Print Network [OSTI]

    the positions of Professor in the Dept. of Materials Science and Engineering, University of TennesseeFrontiers in Chemical Imaging Seminar Series Presented by Dr. Stephen J Pennycook, Ph.D. Materials properties. Finally, the direct imaging and identification of point defect configurations in monolayer BN

  20. Distribution of anomalous exponents of natural images

    E-Print Network [OSTI]

    Sochen, Nir

    to the appropriate Fourier components of the image. Such a behavior is typical to the Fourier transform of the spin logarithm, (i), the power spectrum of the whole set of images is taken. The power spectrum is found dimension, is positive and usually not large [5­7]. Such power law behavior is also characteristic of system

  1. Birefringent Fourier-transform imaging spectrometer

    E-Print Network [OSTI]

    Harvey, Andy

    Birefringent Fourier-transform imaging spectrometer Andrew Robert Harvey and David William Fletcher.r.Harvey@hw.ac.uk http://www.ece.eps.hw.ac.uk/~arharvey Abstract: Fourier-transform imaging spectrometers offer important, for application in harsh environments, deployment of Fourier-transform instruments based on traditional moving

  2. HIGH-PERFORMANCE TOMOGRAPHIC IMAGING AND APPLICATIONS

    E-Print Network [OSTI]

    Wang, Yuan-Fang

    in both transmission and reflection modes. Tomographic acoustic microscopy, ground-penetrating radar evaluation. One microwave subsurface imaging application is the ground-penetrating radar (GPR) imaging functions in the pulse-echo mode with a multi-element array. The applications cover a wide range of oceanic

  3. From Analog Objects to Digital Images

    E-Print Network [OSTI]

    van Vliet, Lucas J.

    of light, light as wave disturbance and light as quanta of energy. We introduce the concept of light as a wave disturbance to explain the imaging process in a microscope. It shows that the finite aperture of a lens system produces an upper limit to the frequency content of the imaged object. The quantum nature

  4. Method for nuclear magnetic resonance imaging

    DOE Patents [OSTI]

    Kehayias, J.J.; Joel, D.D.; Adams, W.H.; Stein, H.L.

    1988-05-26T23:59:59.000Z

    A method for in vivo NMR imaging of the blood vessels and organs of a patient characterized by using a dark dye-like imaging substance consisting essentially of a stable, high-purity concentration of D/sub 2/O in a solution with water.

  5. Offshore wind resource assessment through satellite images

    E-Print Network [OSTI]

    1 Slide no. 4 Offshore wind resource assessment through satellite images Charlotte Bay Hasager images for offshore wind ressource assessment in lieu of in-situ mast observations #12;4 Slide no Hasager, Dellwik, Nielsen and Furevik, 2004, Validation of ERS-2 SAR offshore wind-speed maps in the North

  6. Image Hashes as Templates for Verification

    SciTech Connect (OSTI)

    Janik, Tadeusz; Jarman, Kenneth D.; Robinson, Sean M.; Seifert, Allen; McDonald, Benjamin S.; White, Timothy A.

    2012-07-17T23:59:59.000Z

    Imaging systems can provide measurements that confidently assess characteristics of nuclear weapons and dismantled weapon components, and such assessment will be needed in future verification for arms control. Yet imaging is often viewed as too intrusive, raising concern about the ability to protect sensitive information. In particular, the prospect of using image-based templates for verifying the presence or absence of a warhead, or of the declared configuration of fissile material in storage, may be rejected out-of-hand as being too vulnerable to violation of information barrier (IB) principles. Development of a rigorous approach for generating and comparing reduced-information templates from images, and assessing the security, sensitivity, and robustness of verification using such templates, are needed to address these concerns. We discuss our efforts to develop such a rigorous approach based on a combination of image-feature extraction and encryption-utilizing hash functions to confirm proffered declarations, providing strong classified data security while maintaining high confidence for verification. The proposed work is focused on developing secure, robust, tamper-sensitive and automatic techniques that may enable the comparison of non-sensitive hashed image data outside an IB. It is rooted in research on so-called perceptual hash functions for image comparison, at the interface of signal/image processing, pattern recognition, cryptography, and information theory. Such perceptual or robust image hashing—which, strictly speaking, is not truly cryptographic hashing—has extensive application in content authentication and information retrieval, database search, and security assurance. Applying and extending the principles of perceptual hashing to imaging for arms control, we propose techniques that are sensitive to altering, forging and tampering of the imaged object yet robust and tolerant to content-preserving image distortions and noise. Ensuring that the information contained in the hashed image data (available out-of-IB) cannot be used to extract sensitive information about the imaged object is of primary concern. Thus the techniques are characterized by high unpredictability to guarantee security. We will present an assessment of the performance of our techniques with respect to security, sensitivity and robustness on the basis of a methodical and mathematically precise framework.

  7. Robust diffusion imaging framework for clinical studies

    E-Print Network [OSTI]

    Maximov, Ivan I; Neuner, Irene; Shah, N Jon

    2015-01-01T23:59:59.000Z

    Clinical diffusion imaging requires short acquisition times and good image quality to permit its use in various medical applications. In turn, these demands require the development of a robust and efficient post-processing framework in order to guarantee useful and reliable results. However, multiple artefacts abound in in vivo measurements; from either subject such as cardiac pulsation, bulk head motion, respiratory motion and involuntary tics and tremor, or imaging hardware related problems, such as table vibrations, etc. These artefacts can severely degrade the resulting images and render diffusion analysis difficult or impossible. In order to overcome these problems, we developed a robust and efficient framework enabling the use of initially corrupted images from a clinical study. At the heart of this framework is an improved least trimmed squares diffusion tensor estimation algorithm that works well with severely degraded datasets with low signal-to-noise ratio. This approach has been compared with other...

  8. IEEE TRANSACTIONS ON MEDICAL IMAGING, VOL. 32, NO. 7, JULY 2013 1 Deformable Medical Image Registration: A Survey

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    recent advances in the domain. Additional emphasis has been given to techniques applied to medical imagesIEEE TRANSACTIONS ON MEDICAL IMAGING, VOL. 32, NO. 7, JULY 2013 1 Deformable Medical Image Paragios, Fellow, IEEE Abstract--Deformable image registration is a fundamental task in medical image

  9. Imaging Arithmetic: Physics Math > Physics + Math Gaurav Sharma

    E-Print Network [OSTI]

    Sharma, Gaurav

    Imaging Arithmetic: Physics Math > Physics + Math Gaurav Sharma Electrical and Computer, NY 14627-0126 ABSTRACT Imaging devices operate at the physical interfaces corresponding to image capture and reproduction. The combi- nation of physical insight and mathematical signal processing tools

  10. Surface Dependent Representations for Illumination Insensitive Image Comparison

    E-Print Network [OSTI]

    Lindenbaum, Michael

    . Lighting variation significantly affects surface appearance and makes image comparison difficultSurface Dependent Representations for Illumination Insensitive Image Comparison Margarita Osadchy the problem of matching images to tell whether they come from the same scene viewed under different lighting

  11. Statistical Image Reconstruction Algorithms Using Paraboloidal Surrogates for PET Transmission

    E-Print Network [OSTI]

    Fessler, Jeffrey A.

    Statistical Image Reconstruction Algorithms Using Paraboloidal Surrogates for PET Transmission Reconstruction Algorithms Using Paraboloidal Surrogates for PET Transmission Scans by Hakan Erdogan Chair: Jeffrey A. Fessler Positron Emission Tomography (PET) is a diagnostic imaging tool that provides images

  12. Master Thesis Proposal Eddy Current Imaging of Electrically Conducting Media

    E-Print Network [OSTI]

    Vuik, Kees

    Master Thesis Proposal Eddy Current Imaging of Electrically Conducting Media Domenico Lahaye and optimization techniques en- abling the eddy current imaging of electrically conducting media. Examples: · perform a literature study into topics such as eddy current imaging, inverse problems including

  13. Research review Geophysical subsurface imaging for ecological applications

    E-Print Network [OSTI]

    Jackson, Robert B.

    Research review Geophysical subsurface imaging for ecological applications Author resistivity imaging, geophysical imaging, ground-penetrating radar, plant­soil interactions, soil be costly, time consuming, andinfeasible, especially if the spatial scales involved are large. Geophysical

  14. Engineering and information technology: Using imaging to reengineer business

    SciTech Connect (OSTI)

    Norton, F.J.

    1996-06-10T23:59:59.000Z

    Image processing can be a great asset to business process reengineering. This paper examines image processing`s impact on workflow and attempts to list the questions that should be addressed before imaging technology is introduced.

  15. anode image sensor: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    In recent years, vision systems based on CMOS image Hornsey, Richard 4 A biomorphic digital image sensor CiteSeer Summary: AbstractAn arbitrated address-event imager has...

  16. PET Plants: Imaging Natural Processes for Renewable Energy

    E-Print Network [OSTI]

    Homes, Christopher C.

    PET Plants: Imaging Natural Processes for Renewable Energy from Plants Benjamin A. Babst Goldhaber Postdoctoral Fellow Medical Department Plant Imaging #12;PET imaging for medicine Tumor Diagnosis Biomedical research and plants #12;Brookhaven's Unique Capabilities Movement, distribution, and metabolism

  17. Content-oriented 3D reconstruction from image streams

    E-Print Network [OSTI]

    Knoblauch, Daniel

    2011-01-01T23:59:59.000Z

    the automatisation of SaM from image sequences and videosby the input images to improve 3D reconstructions in SaMMo- tion (SaM). Structure and Motion from image sequences or

  18. arrays ultrasonic imaging: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    1988-01-01 74 The SORDS trimodal imager detector arrays MIT - DSpace Summary: The Raytheon Trimodal Imager (TMI) uses coded aperture and Compton imaging technologies as well as...

  19. Model-based reconstruction of magnetic resonance spectroscopic imaging

    E-Print Network [OSTI]

    Chatnuntawech, Itthi

    2013-01-01T23:59:59.000Z

    Magnetic resonance imaging (MRI) is a medical imaging technique that is used to obtain images of soft tissue throughout the body. Since its development in the 1970s, MRI has gained tremendous importance in clinical practice ...

  20. X-ray lithography using holographic images

    DOE Patents [OSTI]

    Howells, Malcolm S. (Berkeley, CA); Jacobsen, Chris (Sound Beach, NY)

    1997-01-01T23:59:59.000Z

    Methods for forming X-ray images having 0.25 .mu.m minimum line widths on X-ray sensitive material are presented. A holgraphic image of a desired circuit pattern is projected onto a wafer or other image-receiving substrate to allow recording of the desired image in photoresist material. In one embodiment, the method uses on-axis transmission and provides a high flux X-ray source having modest monochromaticity and coherence requirements. A layer of light-sensitive photoresist material on a wafer with a selected surface is provided to receive the image(s). The hologram has variable optical thickness and variable associated optical phase angle and amplitude attenuation for transmission of the X-rays. A second embodiment uses off-axis holography. The wafer receives the holographic image by grazing incidence reflection from a hologram printed on a flat metal or other highly reflecting surface or substrate. In this second embodiment, an X-ray beam with a high degree of monochromaticity and spatial coherence is required.

  1. X-ray lithography using holographic images

    DOE Patents [OSTI]

    Howells, M.S.; Jacobsen, C.

    1997-03-18T23:59:59.000Z

    Methods for forming X-ray images having 0.25 {micro}m minimum line widths on X-ray sensitive material are presented. A holographic image of a desired circuit pattern is projected onto a wafer or other image-receiving substrate to allow recording of the desired image in photoresist material. In one embodiment, the method uses on-axis transmission and provides a high flux X-ray source having modest monochromaticity and coherence requirements. A layer of light-sensitive photoresist material on a wafer with a selected surface is provided to receive the image(s). The hologram has variable optical thickness and variable associated optical phase angle and amplitude attenuation for transmission of the X-rays. A second embodiment uses off-axis holography. The wafer receives the holographic image by grazing incidence reflection from a hologram printed on a flat metal or other highly reflecting surface or substrate. In this second embodiment, an X-ray beam with a high degree of monochromaticity and spatial coherence is required. 15 figs.

  2. Method for eliminating artifacts in CCD imagers

    DOE Patents [OSTI]

    Turko, B.T.; Yates, G.J.

    1992-06-09T23:59:59.000Z

    An electronic method for eliminating artifacts in a video camera employing a charge coupled device (CCD) as an image sensor is disclosed. The method comprises the step of initializing the camera prior to normal read out and includes a first dump cycle period for transferring radiation generated charge into the horizontal register while the decaying image on the phosphor being imaged is being integrated in the photosites, and a second dump cycle period, occurring after the phosphor image has decayed, for rapidly dumping unwanted smear charge which has been generated in the vertical registers. Image charge is then transferred from the photosites and to the vertical registers and read out in conventional fashion. The inventive method allows the video camera to be used in environments having high ionizing radiation content, and to capture images of events of very short duration and occurring either within or outside the normal visual wavelength spectrum. Resultant images are free from ghost, smear and smear phenomena caused by insufficient opacity of the registers and, and are also free from random damage caused by ionization charges which exceed the charge limit capacity of the photosites. 3 figs.

  3. The Neutron Imaging Diagnostic at NIF

    SciTech Connect (OSTI)

    Merrill, F E; Buckles, R; Clark, D; Danly, C R; Drury, O B; Dzenitis, J M; Fatherly, V E; Fittinghoff, D N; Gallegos, R; Grim, G P; Guler, N; Loomis, E N; Lutz, S; Malone, R M; Martinson, D D; Mares, D; Morley, D J; Morgan, G L; Oertel, J A; Tregillis, I L; Volegov, P L; Weiss, P B; Wilde, C H

    2012-10-01T23:59:59.000Z

    A neutron imaging diagnostic has recently been commissioned at the National Ignition Facility (NIF). This new system is an important diagnostic tool for inertial fusion studies at the NIF for measuring the size and shape of the burning DT plasma during the ignition stage of ICF implosions. The imaging technique utilizes a pinhole neutron aperture, placed between the neutron source and a neutron detector. The detection system measures the two dimensional distribution of neutrons passing through the pinhole. This diagnostic has been designed to collect two images at two times. The long flight path for this diagnostic, 28 m, results in a chromatic separation of the neutrons, allowing the independently timed images to measure the source distribution for two neutron energies. Typically the first image measures the distribution of the 14 MeV neutrons and the second image of the 6-12 MeV neutrons. The combination of these two images has provided data on the size and shape of the burning plasma within the compressed capsule, as well as a measure of the quantity and spatial distribution of the cold fuel surrounding this core.

  4. Low cost Image Transmission System

    SciTech Connect (OSTI)

    Skogmo, D.

    1994-06-01T23:59:59.000Z

    Throughout the Department of Energy (DOE) complex, sites protect themselves with intrusion detection systems. Some of these systems have sensors in remote areas. These sensors frequently alarm -- not because they have detected a terrorist skulking around the area, but because they have detected a horse, or a dog, or a bush moving in the breeze. Even though the local security force is 99% sure there is no real threat, they must assess each of these nuisance or false alarms. Generally, the procedure consists of dispatching an inspector to drive to the area and make an assessment. This is expensive in terms of manpower and the assessment is not timely. Often, by the time the inspector arrives, the cause of the alarm has vanished. A television camera placed to view the area protected by the sensor could be used to help in this assessment, but this requires the installation of high-quality cable, optical fiber, or a microwave link. Further, to be of use at the present time, the site must have had the foresight to have installed these facilities in the past and have them ready for use now. What is needed is a device to place between the television camera and a modem connecting to a low-bandwidth channel such as radio or a telephone line. This paper discusses the development of such a device: an Image Transmission System, or ITS.

  5. Storage and retrieval of large digital images

    DOE Patents [OSTI]

    Bradley, J.N.

    1998-01-20T23:59:59.000Z

    Image compression and viewing are implemented with (1) a method for performing DWT-based compression on a large digital image with a computer system possessing a two-level system of memory and (2) a method for selectively viewing areas of the image from its compressed representation at multiple resolutions and, if desired, in a client-server environment. The compression of a large digital image I(x,y) is accomplished by first defining a plurality of discrete tile image data subsets T{sub ij}(x,y) that, upon superposition, form the complete set of image data I(x,y). A seamless wavelet-based compression process is effected on I(x,y) that is comprised of successively inputting the tiles T{sub ij}(x,y) in a selected sequence to a DWT routine, and storing the resulting DWT coefficients in a first primary memory. These coefficients are periodically compressed and transferred to a secondary memory to maintain sufficient memory in the primary memory for data processing. The sequence of DWT operations on the tiles T{sub ij}(x,y) effectively calculates a seamless DWT of I(x,y). Data retrieval consists of specifying a resolution and a region of I(x,y) for display. The subset of stored DWT coefficients corresponding to each requested scene is determined and then decompressed for input to an inverse DWT, the output of which forms the image display. The repeated process whereby image views are specified may take the form an interaction with a computer pointing device on an image display from a previous retrieval. 6 figs.

  6. Storage and retrieval of large digital images

    DOE Patents [OSTI]

    Bradley, Jonathan N. (Los Alamos, NM)

    1998-01-01T23:59:59.000Z

    Image compression and viewing are implemented with (1) a method for performing DWT-based compression on a large digital image with a computer system possessing a two-level system of memory and (2) a method for selectively viewing areas of the image from its compressed representation at multiple resolutions and, if desired, in a client-server environment. The compression of a large digital image I(x,y) is accomplished by first defining a plurality of discrete tile image data subsets T.sub.ij (x,y) that, upon superposition, form the complete set of image data I(x,y). A seamless wavelet-based compression process is effected on I(x,y) that is comprised of successively inputting the tiles T.sub.ij (x,y) in a selected sequence to a DWT routine, and storing the resulting DWT coefficients in a first primary memory. These coefficients are periodically compressed and transferred to a secondary memory to maintain sufficient memory in the primary memory for data processing. The sequence of DWT operations on the tiles T.sub.ij (x,y) effectively calculates a seamless DWT of I(x,y). Data retrieval consists of specifying a resolution and a region of I(x,y) for display. The subset of stored DWT coefficients corresponding to each requested scene is determined and then decompressed for input to an inverse DWT, the output of which forms the image display. The repeated process whereby image views are specified may take the form an interaction with a computer pointing device on an image display from a previous retrieval.

  7. abscess imaging approach: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    may be necessary. 3 Kanishka W. Garvin; James H. Willig 2010-01-01 2 New Approach Fractal Image Compression Mathematics Websites Summary: MRCM New Approach Fractal Image...

  8. Magnetic Resonance Imaging (MRI) of PEM Dehydration and Gas Manifold...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Resonance Imaging (MRI) of PEM Dehydration and Gas Manifold Flooding During Continuous Fuel Cell Operation. Magnetic Resonance Imaging (MRI) of PEM Dehydration and Gas Manifold...

  9. Real-Time Virus Trapping and Fluorescent Imaging in Microfluidic

    E-Print Network [OSTI]

    Bashir, Rashid

    particles; however, this method requires the samples to be dried, fixed, coated, and laboriously prepared time, the images were collected with a computer running a video image capture

  10. An Automated Platform for High-Resolution Tissue Imaging Using...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    entire image is acquired. The performance of the system is demonstrated by imaging rat brain tissue sections. High resolution mass analysis combined with MSMS experiments enabled...

  11. Micro-Spectroscopic Imaging and Characterization of Individually...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Spectroscopic Imaging and Characterization of Individually Identified Ice Nucleating Particles from a Case Field Study. Micro-Spectroscopic Imaging and Characterization of...

  12. angiography image quality: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    across all imaging modalities by modelling the universal phantom: breaking any ... Reilly, Andrew James 2011-07-05 103 OBJECTIVE IMAGE QUALITY ASSESSMENT OF MULTIPLY DISTORTED...

  13. advanced imaging techniques: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Image restoration Lfdahl, Mats 8 Advanced Penning-type ion source development and passive beam focusing techniques for an associated particle imaging neutron generator. Open...

  14. Chemical Imaging Analysis of Environmental Particles Using the...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Imaging Analysis of Environmental Particles Using the Focused Ion BeamScanning Electron Microscopy Technique: Chemical Imaging Analysis of Environmental Particles Using the...

  15. A New Interpretation of the Scanning Tunneling Microscope Image...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Interpretation of the Scanning Tunneling Microscope Image of Graphite. A New Interpretation of the Scanning Tunneling Microscope Image of Graphite. Abstract: In this work,...

  16. Advanced 3D Geophysical Imaging Technologies for Geothermal Resource...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    3D Geophysical Imaging Technologies for Geothermal Resource Characterization Advanced 3D Geophysical Imaging Technologies for Geothermal Resource Characterization Advanced 3D...

  17. Method of imaging the heart using copper-64 citrate

    DOE Patents [OSTI]

    Crook, James E. (Oak Ridge, TN)

    1988-01-01T23:59:59.000Z

    A method of imaging the heart to provide a distinct image using positron emission tomography comprises administering copper-64 citrate and a compatible carrier.

  18. Using Digital Images of the Zebra Finch Song System as

    E-Print Network [OSTI]

    2011-01-01T23:59:59.000Z

    barriers by creating a library of digital images of the birdcreating digital tools, including an image library of songlibrary, students not only repeat an Bird Song System Digital

  19. Absorption Mode FT-ICR Mass Spectrometry Imaging. | EMSL

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mass Spectrometry Imaging. Absorption Mode FT-ICR Mass Spectrometry Imaging. Abstract: Fourier transform ion cyclotron resonance mass spectrometry offers the highest mass resolving...

  20. Wavelet smoothing of functional magnetic resonance images: A ...

    E-Print Network [OSTI]

    1910-30-72T23:59:59.000Z

    The two types of images are then compared; the regions where there are significant ... techniques at various stages in the production of the magnitude images.

  1. Minimally invasive diagnostic imaging using high resolution Optical Coherence Tomography

    E-Print Network [OSTI]

    Herz, Paul Richard, 1972-

    2004-01-01T23:59:59.000Z

    Advances in medical imaging have given researchers unprecedented capabilities to visualize, characterize and understand biological systems. Optical Coherence Tomography (OCT) is a high speed, high resolution imaging technique ...

  2. Application of Neutron Imaging and Scattering to Fluid Flow and...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Application of Neutron Imaging and Scattering to Fluid Flow and Fracture in EGS Environments Application of Neutron Imaging and Scattering to Fluid Flow and Fracture in EGS...

  3. Technique Recovers Atomic Resolution in Spectrum Images | ornl...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    in Spectrum Images April 08, 2015 Raw Fe L-shell spectrum image data, which indicate magnetic properties of the material, were acquired using scanning transmission electron...

  4. Imaging, Characterizing, and Modeling of Fracture Networks and...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    objectives: Improve image resolution for microseismicimaging and time-lapse active seismic imaging; Enhance the prediction of fluid flow and temperature distributions and...

  5. Imaging, Characterizing, and Modeling of Fracture Networks and...

    Broader source: Energy.gov (indexed) [DOE]

    novel imaging methods for monitoring EGS reservoirs. - Innovation: Use time-lapse seismic data and elastic-waveform inversion for high-resolution reservoir imaging; Improve...

  6. Polarized Helium to Image the Lung

    E-Print Network [OSTI]

    Leduc, M; Leduc, Mich\\`{e}le; Nacher, Pierre-Jean

    2006-01-01T23:59:59.000Z

    The main findings of the european PHIL project (Polarised Helium to Image the Lung) are reported. State of the art optical pumping techniques for polarising ^3He gas are described. MRI methodological improvements allow dynamical ventilation images with a good resolution, ultimately limited by gas diffusion. Diffusion imaging appears as a robust method of lung diagnosis. A discussion of the potential advantage of low field MRI is presented. Selected PHIL results for emphysema are given, with the perspectives that this joint work opens up for the future of respiratory medicine.

  7. Estimating IMU heading error from SAR images.

    SciTech Connect (OSTI)

    Doerry, Armin Walter

    2009-03-01T23:59:59.000Z

    Angular orientation errors of the real antenna for Synthetic Aperture Radar (SAR) will manifest as undesired illumination gradients in SAR images. These gradients can be measured, and the pointing error can be calculated. This can be done for single images, but done more robustly using multi-image methods. Several methods are provided in this report. The pointing error can then be fed back to the navigation Kalman filter to correct for problematic heading (yaw) error drift. This can mitigate the need for uncomfortable and undesired IMU alignment maneuvers such as S-turns.

  8. Image interpolation by multivariate B-splines

    E-Print Network [OSTI]

    Chan, Ki Bun

    1986-01-01T23:59:59.000Z

    's reduction. 3. 8 First iteration on r's reduction image. 3. 9 Second iteration on te reduction image. 3. 10 Third iteration on ?, e reduction image. 3. 11 Normalized MSE versus number of iterations. Page 12 13 15 16 22 23 24 25 26 27 28 29... Foveal spot - 4 to 1, peripheral - r's to 1. 4. 6 Foveal spot - ~ to 1, peripheral - ?, s to 7. . 1 1 1 38 39 40 41 42 4. 7 Pre-processed two foveal spots. 4. 8 Two foveal spots . 4. 9 Pre-processed three foveal spots 4. 10 Three foveal spots...

  9. Imaging Fukushima Daiichi reactors with muons

    SciTech Connect (OSTI)

    Miyadera, Haruo; Borozdin, Konstantin N.; Greene, Steve J.; Milner, Edward C.; Morris, Christopher L. [Los Alamos National Laboratory, Los Alamos, NM 87545 (United States); Lukic, Zarija [Computational Cosmology Center, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 (United States); Masuda, Koji [University of New Mexico, Albuquerque, NM 87131 (United States); Perry, John O. [Los Alamos National Laboratory, Los Alamos, NM 87545 (United States); University of New Mexico, Albuquerque, NM 87131 (United States)

    2013-05-15T23:59:59.000Z

    A study of imaging the Fukushima Daiichi reactors with cosmic-ray muons to assess the damage to the reactors is presented. Muon scattering imaging has high sensitivity for detecting uranium fuel and debris even through thick concrete walls and a reactor pressure vessel. Technical demonstrations using a reactor mockup, detector radiation test at Fukushima Daiichi, and simulation studies have been carried out. These studies establish feasibility for the reactor imaging. A few months of measurement will reveal the spatial distribution of the reactor fuel. The muon scattering technique would be the best and probably the only way for Fukushima Daiichi to make this determination in the near future.

  10. Magnetic field imaging with atomic Rb vapor

    E-Print Network [OSTI]

    Eugeniy E. Mikhailov; I. Novikova; M. D. Havey; F. A. Narducci

    2009-07-27T23:59:59.000Z

    We demonstrate the possibility of dynamic imaging of magnetic fields using electromagnetically induced transparency in an atomic gas. As an experimental demonstration we employ an atomic Rb gas confined in a glass cell to image the transverse magnetic field created by a long straight wire. In this arrangement, which clearly reveals the essential effect, the field of view is about 2 x 2 mm^2 and the field detection uncertainty is 0.14 mG per 10 um x 10 um image pixel.

  11. Antarctica: measuring glacier velocity from satellite images

    SciTech Connect (OSTI)

    Lucchitta, B.K.; Ferguson, H.M.

    1986-11-28T23:59:59.000Z

    Many Landsat images of Antarctica show distinctive flow and crevasse features in the floating part of ice streams and outlet glaciers immediately below their grounding zones. Some of the features, which move with the glacier or ice stream, remain visible over many years and thus allow time-lapse measurements of ice velocities. Measurements taken from Landsat images of features on Byrd Glacier agree well with detailed ground and aerial observations. The satellite-image technique thus offers a rapid and cost-effective method of obtaining average velocities, to a first order of accuracy, of many ice streams and outlet glaciers near their termini.

  12. ESO Imaging Survey: Finding Targets for VLT

    E-Print Network [OSTI]

    L. N. da Costa

    1998-09-16T23:59:59.000Z

    Data from the wide-angle, moderately deep ESO Imaging Survey have been used to produce target lists for the first year of the VLT. About 250 candidate clusters of galaxies have been identified from the I-band images covering $\\sim$ 17 square degrees. In addition, using the multicolor data available over an area of 1.3 square degrees over 300 potentially interesting point-sources have been selected. The color-selected targets include low-mass stars/brown dwarfs, white-dwarfs and quasars. Images, object catalogs and derived target lists are available from the world-wide web (http://www.eso.org/eis)

  13. Method for large and rapid terahertz imaging

    DOE Patents [OSTI]

    Williams, Gwyn P.; Neil, George R.

    2013-01-29T23:59:59.000Z

    A method of large-scale active THz imaging using a combination of a compact high power THz source (>1 watt), an optional optical system, and a camera for the detection of reflected or transmitted THz radiation, without the need for the burdensome power source or detector cooling systems required by similar prior art such devices. With such a system, one is able to image, for example, a whole person in seconds or less, whereas at present, using low power sources and scanning techniques, it takes several minutes or even hours to image even a 1 cm.times.1 cm area of skin.

  14. Synchrotron radiation imaging is a powerful tool to image brain microvasculature

    SciTech Connect (OSTI)

    Zhang, Mengqi; Sun, Danni; Xie, Yuanyuan; Xia, Jian; Long, Hongyu; Hu, Kai; Xiao, Bo, E-mail: csuxiaobo123456@163.com [Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008 (China)] [Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008 (China); Peng, Guanyun [Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 (China)] [Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 (China)

    2014-03-15T23:59:59.000Z

    Synchrotron radiation (SR) imaging is a powerful experimental tool for micrometer-scale imaging of microcirculation in vivo. This review discusses recent methodological advances and findings from morphological investigations of cerebral vascular networks during several neurovascular pathologies. In particular, it describes recent developments in SR microangiography for real-time assessment of the brain microvasculature under various pathological conditions in small animal models. It also covers studies that employed SR-based phase-contrast imaging to acquire 3D brain images and provide detailed maps of brain vasculature. In addition, a brief introduction of SR technology and current limitations of SR sources are described in this review. In the near future, SR imaging could transform into a common and informative imaging modality to resolve subtle details of cerebrovascular function.

  15. Method for the reduction of image content redundancy in large image databases

    DOE Patents [OSTI]

    Tobin, Kenneth William (Harriman, TN); Karnowski, Thomas P. (Knoxville, TN)

    2010-03-02T23:59:59.000Z

    A method of increasing information content for content-based image retrieval (CBIR) systems includes the steps of providing a CBIR database, the database having an index for a plurality of stored digital images using a plurality of feature vectors, the feature vectors corresponding to distinct descriptive characteristics of the images. A visual similarity parameter value is calculated based on a degree of visual similarity between features vectors of an incoming image being considered for entry into the database and feature vectors associated with a most similar of the stored images. Based on said visual similarity parameter value it is determined whether to store or how long to store the feature vectors associated with the incoming image in the database.

  16. Purdue University :: College of Science :: Scattering, Imaging ...

    E-Print Network [OSTI]

    05/27/2011Seismic Imaging of Transition Zone Discontinuities Suggests Hot Mantle West of HawaiiRead more. 07/25/2013Post-Doc Position openingRead ...

  17. Blind assessment of localisation microscope image resolution

    E-Print Network [OSTI]

    Rees, Eric J; Erdelyi, Miklos; Pinotsi, Dorothea; Knight, Alex; Metcalf, Daniel; Kaminski, Clemens F

    2012-12-10T23:59:59.000Z

    localisation precisions and densities. Methods By analysing localisation microscopy as a statistical method of Density Estimation, we present a method that produces a blind estimate of the resolution in a super-resolved image. This estimate is derived directly...

  18. Single echo acquisition magnetic resonance imaging 

    E-Print Network [OSTI]

    McDougall, Mary Preston

    2006-04-12T23:59:59.000Z

    The dramatic improvement in magnetic resonance imaging (MRI) scan time over the past fifteen years through gradient-based methods that sample k-space more efficiently and quickly cannot be sustained, as thresholds regarding ...

  19. Gigapixel Computational Imaging Oliver S. Cossairt

    E-Print Network [OSTI]

    Nayar, Shree K.

    Gigapixel Computational Imaging Oliver S. Cossairt ollie@cs.columbia.edu Daniel Miau dm2701 size. As an example, consider the commercially available F/8 500mm focal length Schneider Apo

  20. Parallel magnetic resonance imaging: characterization and comparison

    E-Print Network [OSTI]

    Rane, Swati Dnyandeo

    2005-11-01T23:59:59.000Z

    [Sodickson, 1997], GRAPPA [Griswold, 2002] and SPACE RIP [Kyriakos, 2000]; developed in the past decade have been studied, simulated and compared in this research. Because of the dependence of the parallel imaging methods on numerous factors such as receiver...

  1. Multimodality Imaging Atlas of Coronary Atherosclerosis

    E-Print Network [OSTI]

    Donnelly, Patrick

    NEW HIGH-RESOLUTION IMAGING TECHNOLOGIES HAVE ENHANCED OUR UNDERSTANDING OF THE CORONARY atherosclerotic disease process, and this atlas provides a multimodality pictorial review of the development of histologically verified ...

  2. Portable imaging system method and apparatus

    DOE Patents [OSTI]

    Freifeld, Barry M.; Kneafsley, Timothy J.; Pruess, Jacob; Tomutsa, Liviu; Reiter, Paul A.; deCastro, Ted M.

    2006-07-25T23:59:59.000Z

    An operator shielded X-ray imaging system has sufficiently low mass (less than 300 kg) and is compact enough to enable portability by reducing operator shielding requirements to a minimum shielded volume. The resultant shielded volume may require a relatively small mass of shielding in addition to the already integrally shielded X-ray source, intensifier, and detector. The system is suitable for portable imaging of well cores at remotely located well drilling sites. The system accommodates either small samples, or small cross-sectioned objects of unlimited length. By rotating samples relative to the imaging device, the information required for computer aided tomographic reconstruction may be obtained. By further translating the samples relative to the imaging system, fully three dimensional (3D) tomographic reconstructions may be obtained of samples having arbitrary length.

  3. Harmonic Wavelet Transform and Image Approximation

    E-Print Network [OSTI]

    Zhang, Zhihua; Saito, Naoki

    2010-01-01T23:59:59.000Z

    C.K. : An Introduction to Wavelets. Academic Press, SanDaubechies, I. , Vial, P. : Wavelet bases on the inter- valGlobal climate change, wavelet analysis, image processing,

  4. Seismic imaging using higher order statistics

    E-Print Network [OSTI]

    Srinivasan, Karthik

    1999-01-01T23:59:59.000Z

    Improvements in seismic resolution beyond typical seismic wavelength will have significant implications for hydrocarbon exploration and production. Conventional imaging algorithms can be derived as a least squared optimization problem in which...

  5. Frontiers in Chemical Imaging Seminar Series

    E-Print Network [OSTI]

    Frontiers in Chemical Imaging Seminar Series On the trail of the Chimera The Atom the Chimera is still elusive. 1. Thomas F. Kelly and David J. Larson. Ann Rev. Materials Res 42 (2012) 1. 2

  6. Trajectories of the images in binary microlensing

    E-Print Network [OSTI]

    V. Bozza

    2001-05-16T23:59:59.000Z

    We study in detail the trajectories followed by single images during binary microlensing events. Starting from perturbative resolutions of the lens equation, we explore the full parameter space by continuity arguments. We see that the images created during the caustic crossing can recombine with the others in different ways. This leads to a new classification of the microlensing events according to the behaviour of the images. We show that the images involved in these combinations depend on the folds that are crossed at the entry and at the exit from the caustic. Non-trivial trajectories can be classified into four main types. Some consequences for the motion of the center of light of the source in astrometric measurements are also examined.

  7. Lensless X-Ray Imaging in Reflection

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Imaging in Reflection Print Wednesday, 26 October 2011 00:00 The advent of x-ray free-electron laser (XFEL) light sources has led to an outburst of research activities in the field...

  8. Fluorescence Imaging for Nuclear Arms Control Verification

    E-Print Network [OSTI]

    Feener, Jessica S

    2014-08-14T23:59:59.000Z

    treaties. Specifically, this technique uses fluorescence imaging to determine fissile material attributes in verifying, during the dismantlement process, an uncanned nuclear warhead or warhead component without revealing sensitive information. This could...

  9. HEAVY-ION IMAGING APPLIED TO MEDICINE

    E-Print Network [OSTI]

    Fabrikant, J.I.

    2013-01-01T23:59:59.000Z

    heavy particles rat h er than the vax~at1.on 1n t h e x-rayprograms on the a PDPll-34 and VAX- 780 computers. The image

  10. Portable low-cost magnetic resonance imaging

    E-Print Network [OSTI]

    Cooley, Clarissa Zimmerman

    2014-01-01T23:59:59.000Z

    Purpose: As the premiere modality for brain imaging, MRI could find wider applicability if lightweight, portable systems were available for siting in unconventional locations such as intensive care units (ICUs), physician ...

  11. PMI Toolbox User's Guide Photon Migration Imaging

    E-Print Network [OSTI]

    Boas, David

    PMI Toolbox User's Guide 2/25/2002 1 Photon Migration Imaging Toolbox 2001 http Temple Place - Suite 330, Boston, MA 02111-1307, USA. http://www.gnu.org/copyleft/gpl.html #12;PMI

  12. Signal and imaging sciences workshop proceedings

    SciTech Connect (OSTI)

    Candy, J.V.

    1997-11-01T23:59:59.000Z

    Papers are presented in the areas of: Medical Technologies; Non-Destructive Evaluation; Applications of Signal/Image Processing; Laser Guide Star and Adaptive Optics; Computational Electromagnetic, Acoustics and Optics; Micro-Impulse Radar Processing; Optical Applications; TANGO Space Shuttle.

  13. Imaging with Spherically Bent Crystals or Reflectors

    SciTech Connect (OSTI)

    Bitter, M; Hill, K W; Scott, S; Ince-Cushman, A; Reinke, M; Podpaly, Y; Rice, J E; Beiersdorfer, P

    2010-06-01T23:59:59.000Z

    This paper consists of two parts: Part I describes the working principle of a recently developed x-ray imaging crystal spectrometer, where the astigmatism of spherically bent crystals is being used with advantage to record spatially resolved spectra of highly charged ions for Doppler measurements of the ion-temperature and toroidal plasmarotation- velocity profiles in tokamak plasmas. This type of spectrometer was thoroughly tested on NSTX and Alcator C-Mod, and its concept was recently adopted for the design of the ITER crystal spectrometers. Part II describes imaging schemes, where the astigmatism has been eliminated by the use of matched pairs of spherically bent crystals or reflectors. These imaging schemes are applicable over a wide range of the electromagnetic radiation, which includes microwaves, visible light, EUV radiation, and x-rays. Potential applications with EUV radiation and x-rays are the diagnosis of laserproduced plasmas, imaging of biological samples with synchrotron radiation, and lithography.

  14. Efficient implementation schemes for image enhancement filters 

    E-Print Network [OSTI]

    Yusuf, Khadem Mahmud

    1994-01-01T23:59:59.000Z

    Generalized median filtering techniques that have appeared in previous literature suffer from some severe disadvantages. They are not only hardware intensive and time consuming but also tend to smear image edges. These shortcomings can be overcome...

  15. CMOS passive pixel image design techniques

    E-Print Network [OSTI]

    Fujimori, Iliana L. (Iliana Lucia)

    2002-01-01T23:59:59.000Z

    CMOS technology provides an attractive alternative to the currently dominant CCD technology for implementing low-power, low-cost imagers with high levels of integration. Two pixel configurations are possible in CMOS ...

  16. Efficient implementation schemes for image enhancement filters

    E-Print Network [OSTI]

    Yusuf, Khadem Mahmud

    1994-01-01T23:59:59.000Z

    Generalized median filtering techniques that have appeared in previous literature suffer from some severe disadvantages. They are not only hardware intensive and time consuming but also tend to smear image edges. These shortcomings can be overcome...

  17. Digital imaging tracing technology for print media

    E-Print Network [OSTI]

    Milne, Stewart William

    1997-01-01T23:59:59.000Z

    This thesis examines and analyzes the existing state of digital technology use in print media and the attitudes of those using the technology to develop a technology that would help prevent the unethical manipulation of images in mass media...

  18. Dr. Donne and the Image of Christ

    E-Print Network [OSTI]

    Sloane, Thomas O.

    2006-01-01T23:59:59.000Z

    image as "Delegate of the Trinity" extends beyond the GospelChrist's place within the Trinity: the Father, the Son, andthis "Delegate of the Trinity" (VIII.58), is rhetoricated in

  19. Reflective optical imaging method and circuit

    DOE Patents [OSTI]

    Shafer, David R. (Fairfield, CT)

    2001-01-01T23:59:59.000Z

    An optical system compatible with short wavelength (extreme ultraviolet) radiation comprising four reflective elements for projecting a mask image onto a substrate. The four optical elements are characterized in order from object to image as convex, concave, convex and concave mirrors. The optical system is particularly suited for step and scan lithography methods. The invention increases the slit dimensions associated with ringfield scanning optics, improves wafer throughput and allows higher semiconductor device density.

  20. Ultrasensitive Magnetometry and Imaging with NV Diamond

    E-Print Network [OSTI]

    Kim, Changdong

    2011-08-08T23:59:59.000Z

    ULTRASENSITIVE MAGNETOMETRY AND IMAGING WITH NV DIAMOND A Dissertation by CHANGDONG KIM Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... of DOCTOR OF PHILOSOPHY May 2010 Major Subject: Electrical Engineering ULTRASENSITIVE MAGNETOMETRY AND IMAGING WITH NV DIAMOND A Dissertation by CHANGDONG KIM Submitted to the Office of Graduate Studies of Texas A...

  1. File:Microsoft PowerPoint - FINAL How to capture data from Wind...

    Open Energy Info (EERE)

    to view the file as it appeared at that time. DateTime Thumbnail Dimensions User Comment current 18:59, 2 January 2014 Thumbnail for version as of 18:59, 2 January 2014 1,275 ...

  2. File:TCEQ Map.pdf | Open Energy Information

    Open Energy Info (EERE)

    to view the file as it appeared at that time. DateTime Thumbnail Dimensions User Comment current 09:11, 10 July 2013 Thumbnail for version as of 09:11, 10 July 2013 1,275 ...

  3. Salvo: Seismic imaging software for complex geologies

    SciTech Connect (OSTI)

    OBER,CURTIS C.; GJERTSEN,ROB; WOMBLE,DAVID E.

    2000-03-01T23:59:59.000Z

    This report describes Salvo, a three-dimensional seismic-imaging software for complex geologies. Regions of complex geology, such as overthrusts and salt structures, can cause difficulties for many seismic-imaging algorithms used in production today. The paraxial wave equation and finite-difference methods used within Salvo can produce high-quality seismic images in these difficult regions. However this approach comes with higher computational costs which have been too expensive for standard production. Salvo uses improved numerical algorithms and methods, along with parallel computing, to produce high-quality images and to reduce the computational and the data input/output (I/O) costs. This report documents the numerical algorithms implemented for the paraxial wave equation, including absorbing boundary conditions, phase corrections, imaging conditions, phase encoding, and reduced-source migration. This report also describes I/O algorithms for large seismic data sets and images and parallelization methods used to obtain high efficiencies for both the computations and the I/O of seismic data sets. Finally, this report describes the required steps to compile, port and optimize the Salvo software, and describes the validation data sets used to help verify a working copy of Salvo.

  4. Near-infrared spectroscopic tissue imaging for medical applications

    DOE Patents [OSTI]

    Demos; Stavros (Livermore, CA), Staggs; Michael C. (Tracy, CA)

    2006-03-21T23:59:59.000Z

    Near infrared imaging using elastic light scattering and tissue autofluorescence are explored for medical applications. The approach involves imaging using cross-polarized elastic light scattering and tissue autofluorescence in the Near Infra-Red (NIR) coupled with image processing and inter-image operations to differentiate human tissue components.

  5. Near-infrared spectroscopic tissue imaging for medical applications

    DOE Patents [OSTI]

    Demos, Stavros (Livermore, CA); Staggs, Michael C. (Tracy, CA)

    2006-12-12T23:59:59.000Z

    Near infrared imaging using elastic light scattering and tissue autofluorescence are explored for medical applications. The approach involves imaging using cross-polarized elastic light scattering and tissue autofluorescence in the Near Infra-Red (NIR) coupled with image processing and inter-image operations to differentiate human tissue components.

  6. UCRL-TR-234578 Analysis of Images from

    E-Print Network [OSTI]

    Kamath, Chandrika

    National Laboratory under Contract W-7405-Eng-48. #12;Analysis of Images from Experiments Investigating

  7. Methods for increasing the sensitivity of gamma-ray imagers

    DOE Patents [OSTI]

    Mihailescu, Lucian (Pleasanton, CA); Vetter, Kai M. (Alameda, CA); Chivers, Daniel H. (Fremont, CA)

    2012-02-07T23:59:59.000Z

    Methods are presented that increase the position resolution and granularity of double sided segmented semiconductor detectors. These methods increase the imaging resolution capability of such detectors, either used as Compton cameras, or as position sensitive radiation detectors in imagers such as SPECT, PET, coded apertures, multi-pinhole imagers, or other spatial or temporal modulated imagers.

  8. 15 Acoustic Daylight Imaging in the Michael J. Buckingham

    E-Print Network [OSTI]

    Buckingham, Michael

    15 Acoustic Daylight Imaging in the Ocean Michael J. Buckingham Scripps Institution of Oceanography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 418 15.4 Acoustic daylight images . . . . . . . . . . . . . . . . . . . . . . . . 420 15.5 Concluding. Sensors and Imaging ISBN 0­12­379771­3/$30.00 #12;416 15 Acoustic Daylight Imaging in the Ocean Acoustic

  9. Wavelet smoothing of fMRI activation images Will Penny,

    E-Print Network [OSTI]

    Penny, Will

    Wavelet smoothing of fMRI activation images Will Penny, Wellcome Department of Imaging Neuroscience methods - such as wavelets. 100 #12;2 Wavelet Transform The wavelet spatial model is that introduced, a wavelet transform is defined in which an N-dimensional image is represented by an N-dimensional image

  10. Wavelet Based Color Image Compression and MathematicalWavelet Based Color Image Compression and MathematicalWavelet Based Color Image Compression and MathematicalWavelet Based Color Image Compression and Mathematical Analysis of Sign Entropy CodingAnalysi

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Wavelet Based Color Image Compression and MathematicalWavelet Based Color Image Compression and MathematicalWavelet Based Color Image Compression and MathematicalWavelet Based Color Image Compression.olivier@univ-poitiers.fr Abstract One of the advantages of the Discrete Wavelet Transform (DWT) compared to Fourier Transform (e

  11. Image Forgery Detection Using Multi-Resolution Weber Local Descriptors

    E-Print Network [OSTI]

    Bebis, George

    Image Forgery Detection Using Multi-Resolution Weber Local Descriptors Muhammad Hussain1 , Ghulam * ghulam@ksu.edu.sa Abstract-- In this paper, a multi-resolution Weber law descriptors (WLD) based image of the images. Keywords: image forgery detection, Weber local descriptor, splicing forgery, copy-move forgery

  12. The Segmentation of Sparse MR Images Patrick Craig Marais

    E-Print Network [OSTI]

    Marais, Patrick

    The Segmentation of Sparse MR Images Patrick Craig Marais A thesis submitted to the Department of Sparse MR Images Patrick C. Marais A thesis submitted for the degree of Doctor of Philosophy ``sparse'' MR images. Sparse images were acquired in large numbers prior to the emergence of high

  13. Roadmap: Radiologic Imaging Sciences -Nuclear Medicine (with AAS Radiologic Technology) -

    E-Print Network [OSTI]

    Sheridan, Scott

    Roadmap: Radiologic Imaging Sciences - Nuclear Medicine (with AAS Radiologic Technology) - Bachelor Imaging Sciences - Nuclear Medicine (with AAS Radiologic Technology) - Bachelor of Radiologic and Imaging of Radiologic and Imaging Sciences Technology [RE-BRIT-RIS-NMRT] Regional College Catalog Year: 2012-2013 Page 1

  14. Title: Worldview 2 Satellite Image of York University Data Creator /

    E-Print Network [OSTI]

    and surrounding areas. Consists of two images, a multispectral (colour) and a panchromatic (black and white Panchromatic (blank and white) Image Resolution: 11 metre Multispectral (colour) image resolution: 3 metres Image Date: July 25, 2012 Cloud Cover: 0% Data Type: Raster Digital Data Format: GeoTIFF Datum / Map

  15. Hindawi Publishing Corporation International Journal of Biomedical Imaging

    E-Print Network [OSTI]

    Virginia Tech

    Hindawi Publishing Corporation International Journal of Biomedical Imaging Volume 2006, Article ID, functional, cel- lular, and molecular imaging. The overall goal of the Inter- national Journal of Biomedical the current imaging journals handle. In addition, there are new imag- ing areas that are not specifically

  16. The Method of Small-Volume Expansions for Medical Imaging

    E-Print Network [OSTI]

    Ammari, Habib

    elastography (MRE), impediogra- phy, magneto-acoustic imaging, infrared thermography, and acoustic radiation

  17. A Novel Visual Secret Sharing Scheme without Image Size Expansion

    E-Print Network [OSTI]

    Heys, Howard

    A Novel Visual Secret Sharing Scheme without Image Size Expansion Nazanin Askari, Cecilia Moloney. Visual cryptography is a secure secret sharing scheme that divides secret images into shares which on their own reveal no information of the original secret image. Recovery of the secret image can be performed

  18. Parallel Imaging and Acceleration in the Johnson Noise Dominated Regime

    E-Print Network [OSTI]

    Rosen, Matthew S

    imaging is limit- ed and generally uses superconducting quantum interference device (SQUID) sensors [1

  19. Systems for increasing the sensitivity of gamma-ray imagers

    DOE Patents [OSTI]

    Mihailescu, Lucian; Vetter, Kai M.; Chivers, Daniel H.

    2012-12-11T23:59:59.000Z

    Systems that increase the position resolution and granularity of double sided segmented semiconductor detectors are provided. These systems increase the imaging resolution capability of such detectors, either used as Compton cameras, or as position sensitive radiation detectors in imagers such as SPECT, PET, coded apertures, multi-pinhole imagers, or other spatial or temporal modulated imagers.

  20. Eur J Nucl Med Mol Imaging . Author manuscript The age of reason for FDG PET image-derived indices

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Eur J Nucl Med Mol Imaging . Author manuscript Page /1 3 The age of reason for FDG PET image Author Keywords image derived parameters ; 18F-FDG-PET ; prediction ; prognosis ; therapy response The clinical use of Positron Emission Tomography (PET) imaging using the 2-deoxy-2-(18F

  1. Illumination-Based Image Synthesis: Creating Novel Images of Human Faces Under Di ering Pose and Lighting

    E-Print Network [OSTI]

    Yang, Junfeng

    methods, the Lumigraph 12, 19 exhaustively sam- ples the ray space and renders images of an object fromIllumination-Based Image Synthesis: Creating Novel Images of Human Faces Under Di ering Pose-8267 Urbana, IL 61801 Abstract We present an illumination-based method for synthe- sizing images of an object

  2. 982 IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 18, NO. 5, MAY 2009 Bayesian Separation of Images Modeled

    E-Print Network [OSTI]

    on a statistical model of the gradient image, and we use a fully Bayesian method with modified-Gibbs sam- pling. We982 IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 18, NO. 5, MAY 2009 Bayesian Separation of Images fields within a Bayesian framework. The Bayesian for- mulation enables the incorporation of prior image

  3. 128 IEEE TRANSACTIONS ON MEDICAL IMAGING, VOL. 25, NO. 1, JANUARY 2006 Unwrapping of MR Phase Images Using a

    E-Print Network [OSTI]

    Koetter, Ralf

    128 IEEE TRANSACTIONS ON MEDICAL IMAGING, VOL. 25, NO. 1, JANUARY 2006 Unwrapping of MR Phase of blood flow [1], [2]. Extracting the phase image from its measured complex MR image is nontrivial because, phase unwrapping. I. INTRODUCTION A. Background Magnetic resonance (MR) phase images often contain

  4. 106 IEEE TRANSACTIONS ON MEDICAL IMAGING, VOL. 29, NO. 1, JANUARY 2010 Feature Based Nonrigid Brain MR Image Registration

    E-Print Network [OSTI]

    Chung, Albert C. S.

    106 IEEE TRANSACTIONS ON MEDICAL IMAGING, VOL. 29, NO. 1, JANUARY 2010 Feature Based Nonrigid Brain MR Image Registration With Symmetric Alpha Stable Filters Shu Liao* and Albert C. S. Chung Abstract--A new feature based nonrigid image registration method for magnetic resonance (MR) brain images

  5. Compensation du mouvement respiratoire dans les images TEP Respiratory motion correction in PET images

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Compensation du mouvement respiratoire dans les images TEP Respiratory motion correction in PET itérative. Abstract The quality of the Positron Emission Tomography (PET) is currently limited an integrated system to compensate respiratory motion in PET images. It is based on synchronous acquisition

  6. Transform Methods in ImageTransform Methods in Image ProcessingProcessing

    E-Print Network [OSTI]

    Broughton, S. Allen

    × T (spatial × time) · scientific data: Dt = V (3D volume) · scientific data: Dt can be quite an arbitrary set imaging · denoising: part of restoration · compression: FBI finger print problem, JPEG image storage on a time or spatial domain (or combination) D=Dt X : Dt R or X : Dt C, · in general X L2(Dt ) · energy

  7. Multiple Image Warping for Remote Display of Rendered Images Thomas C. Hudson and William R. Mark

    E-Print Network [OSTI]

    North Carolina at Chapel Hill, University of

    to provide immersion. Our render server constructs images and depth maps (``depth images'') and sends them be swamped by the cost of routing, especially along congested paths. Added to this is the rendering time can attack the latency problem. Historically, aggregate network bandwidth has increased rapidly

  8. Clinical Imaging and Intervention in Cancer: Imaging and Cryotherapy in Renal Cancer

    E-Print Network [OSTI]

    Greenaway, Alan

    Clinical Imaging and Intervention in Cancer: Imaging and Cryotherapy in Renal Cancer Graeme Houston Fluoroscopy 2 #12;Treatments for Cancer Palliative ­ Relief of obstruction ­ Reduce Bleeding ­ Pain Control ­ Avoid complications Disease Modifying 4 #12;Disease Modifying Cancer Treatment In Situ Ablation

  9. Single-Shot Magnetic Resonance Spectroscopic Imaging with Partial Parallel Imaging

    E-Print Network [OSTI]

    spectroscopic imaging (MRSI) pulse se- quence based on proton­echo-planar-spectroscopic-imaging (PEPSI. Comparison with conventional PEPSI and PEPSI with fourfold SENSE accelera- tion demonstrated comparable-acetyl-aspartate (NAA) in vivo with concentration values in the ranges measured with conventional PEPSI and SENSE

  10. Image Forensics of Digital Cameras by Analysing Image Variations using Statistical Process Control

    E-Print Network [OSTI]

    Doran, Simon J.

    the novel use of Statistical Process Control (SPC) as a tool for identifying anomalies in digital cameras, by analysing image variations. We apply SPC on six low-end cameras, and one mid-range camera. By plotting the mean distribution of image pixel data through control charts, we have been able to identify a clear

  11. RIT IMAGING BASH COME ONE, COME ALL, Submit an IMAGE that encapsulates an

    E-Print Network [OSTI]

    Zanibbi, Richard

    to expression astronomy to biomedical printing to digital display ethics to cinema engineering to vision remote.cis.rit.edu/ImagingBash for past years' entries R I TCENTER FOR IMAGING SCIENCE ROCHESTER INSTITUTE OF TECHNOLOGY 6 JUNE 2011 3 PM

  12. Three Dimensional Molecular Imaging for Lignocellulosic Materials

    SciTech Connect (OSTI)

    Bohn, Paul W.; Sweedler, Jonathan V.

    2011-06-09T23:59:59.000Z

    The development of high efficiency, inexpensive processing protocols to render biomass components into fermentable substrates for the sequential processing of cell wall components into fuels and important feedstocks for the biorefinery of the future is a key goal of the national roadmap for renewable energy. Furthermore, the development of such protocols depends critically on detailed knowledge of the spatial and temporal infiltration of reagents designed to remove and separate the phenylpropenoid heteropolymer (lignin) from the processable sugar components sequestered in the rigid cell walls of plants. A detailed chemical and structural understanding of this pre-enzymatic processing in space and time was the focus of this program. We worked to develop new imaging strategies that produce real-time molecular speciation information in situ; extract sub-surface information about the effects of processing; and follow the spatial and temporal characteristics of the molecular species in the matrix and correlate this complex profile with saccharification. Spatially correlated SIMS and Raman imaging were used to provide high quality, high resolution subcellular images of Miscanthus cross sections. Furthermore, the combination of information from the mass spectrometry and Raman scattering allows specific chemical assignments of observed structures, difficult to assign from either imaging approach alone and lays the foundation for subsequent heterocorrelated imaging experiments targeted at more challenging biological systems, such as the interacting plant-microbe systems relevant to the rhizosphere.

  13. Distributed computing of Seismic Imaging Algorithms

    E-Print Network [OSTI]

    Emami, Masnida; Jaberi, Nasrin

    2012-01-01T23:59:59.000Z

    The primary use of technical computing in the oil and gas industries is for seismic imaging of the earth's subsurface, driven by the business need for making well-informed drilling decisions during petroleum exploration and production. Since each oil/gas well in exploration areas costs several tens of millions of dollars, producing high-quality seismic images in a reasonable time can significantly reduce the risk of drilling a "dry hole". Similarly, these images are important as they can improve the position of wells in a billion-dollar producing oil field. However seismic imaging is very data- and compute-intensive which needs to process terabytes of data and require Gflop-years of computation (using "flop" to mean floating point operation per second). Due to the data/computing intensive nature of seismic imaging, parallel computing are used to process data to reduce the time compilation. With introducing of Cloud computing, MapReduce programming model has been attracted a lot of attention in parallel and di...

  14. High power THz sources for nonlinear imaging

    SciTech Connect (OSTI)

    Tekavec, Patrick F.; Kozlov, Vladimir G. [Microtech Instruments, 858 West Park Street, Eugene, OR 97401 (United States)

    2014-02-18T23:59:59.000Z

    Many biological and chemical compounds have unique absorption features in the THz (0.1 - 10 THz) region, making the use of THz waves attractive for imaging in defense, security, biomedical imaging, and monitoring of industrial processes. Unlike optical radiation, THz frequencies can pass through many substances such as paper, clothing, ceramic, etc. with little attenuation. The use of currently available THz systems is limited by lack of highpower, sources as well as sensitive detectors and detector arrays operating at room temperature. Here we present a novel, high power THz source based on intracavity downconverison of optical pulses. The source delivers 6 ps pulses at 1.5 THz, with an average power of >300 ?W and peak powers >450 mW. We propose an imaging method based on frequency upconverison that is ideally suited to use the narrow bandwidth and high peak powers produced by the source. By upconverting the THz image to the infrared, commercially available detectors can be used for real time imaging.

  15. Information-efficient spectral imaging sensor

    DOE Patents [OSTI]

    Sweatt, William C. (Albuquerque, NM); Gentry, Stephen M. (Albuquerque, NM); Boye, Clinton A. (Albuquerque, NM); Grotbeck, Carter L. (Albuquerque, NM); Stallard, Brian R. (Albuquerque, NM); Descour, Michael R. (Tucson, AZ)

    2003-01-01T23:59:59.000Z

    A programmable optical filter for use in multispectral and hyperspectral imaging. The filter splits the light collected by an optical telescope into two channels for each of the pixels in a row in a scanned image, one channel to handle the positive elements of a spectral basis filter and one for the negative elements of the spectral basis filter. Each channel for each pixel disperses its light into n spectral bins, with the light in each bin being attenuated in accordance with the value of the associated positive or negative element of the spectral basis vector. The spectral basis vector is constructed so that its positive elements emphasize the presence of a target and its negative elements emphasize the presence of the constituents of the background of the imaged scene. The attenuated light in the channels is re-imaged onto separate detectors for each pixel and then the signals from the detectors are combined to give an indication of the presence or not of the target in each pixel of the scanned scene. This system provides for a very efficient optical determination of the presence of the target, as opposed to the very data intensive data manipulations that are required in conventional hyperspectral imaging systems.

  16. INTERSTELLAR NEUTRAL ATOMS AT 1 AU OBSERVED BY THE IMAGE/LENA IMAGER

    SciTech Connect (OSTI)

    Fuselier, S. A.; Ghielmetti, A. G. [Lockheed Martin Advanced Technology Center, Palo Alto, CA (United States); Wurz, P. [Physikalishes Institut, University of Bern, CH-3012, Bern (Switzerland)], E-mail: Stephen.a.fuselier@lmco.com, E-mail: gmetti@mail.spasci.com, E-mail: peter.wurz@space.unibe.ch

    2009-06-20T23:59:59.000Z

    Observations from the Imager for Magnetopause to Aurora: Global Exploration (IMAGE) Low Energy Neutral Atom (LENA) imager from 2005 are used to investigate characteristics of interstellar neutrals in the inner solar system. The LENA imager detected an interstellar neutral signal starting in 2004 December and extending to early 2005 April. Using the orientation of the field of view of the imager and the date of the loss of the interstellar neutral signal, it is concluded that the signal is consistent with a relatively compact (several degrees wide in ecliptic latitude and longitude) source of neutral helium and/or energetic (>150 eV) hydrogen originating from the solar apex direction. Observations later in 2005 are used to distinguish the composition and conclude that the relatively compact source likely contains some energetic hydrogen (in addition to the helium)

  17. A multi-frame, megahertz CCD imager

    SciTech Connect (OSTI)

    Mendez, Jacob A [Los Alamos National Laboratory; Balzer, Stephen J [Los Alamos National Laboratory; Watson, Scott A [Los Alamos National Laboratory

    2008-01-01T23:59:59.000Z

    A high-efficiency, high-speed imager has been fabricated capable of framing rates of 2 MHz. This device utilizes a 512 x 512 pixel charge coupled device (CCD) with a 25cmZ active area, and incorporates an electronic shutter technology designed for back-illuminated CCD's, making this the largest and fastest back-illuminated CCD in the world. Characterizing an imager capable of this frame rate presents unique challenges. High speed LED drivers and intense radioactive sources are needed to perform basic measurements. We investigate properties normally associated with single-frame CCD's such as read noise, gain, full-well capacity, detective quantum efficiency (DQE), sensitivity, and linearity. In addition, we investigate several properties associated with the imager's multi-frame operation such as transient frame response and frame-to-frame isolation while contrasting our measurement techniques and results with more conventional devices.

  18. A multi-frame, megahertz CCd imager

    SciTech Connect (OSTI)

    Mendez, Jacob [Los Alamos National Laboratory; Balzer, Stephen [Los Alamos National Laboratory; Watson, Scott [Los Alamos National Laboratory; Reich, Robert [MIT-LL

    2010-01-01T23:59:59.000Z

    To record high-speed, explosively driven, events, a high efficiency, high speed, imager has been fabricated which is capable of framing rates of 2 MHz. This device utilizes a 512 x 512 pixel charge coupled device (CCD) with a 25cm{sup 2} active area, and incorporates an electronic shutter technology designed for back-illuminated CCD's, making this the largest and fastest back-illuminated CCD in the world. Characterizing an imager capable of this frame rate presents unique challenges. High speed LED drivers and intense radioactive sources are needed to perform the most basic measurements. We investigate properties normally associated with single-frame CCD's such as read noise, full-well capacity, sensitivity, signal to noise ratio, linearity and dynamic range. In addition, we investigate several properties associated with the imager's multi-frame operation such as transient frame response and frame-to-frame isolation while contrasting our measurement techniques and results with more conventional devices.

  19. Methodology and apparatus for diffuse photon imaging

    DOE Patents [OSTI]

    Feng, S.C.; Zeng, F.; Zhao, H.L.

    1997-12-09T23:59:59.000Z

    Non-invasive near infrared optical medical imaging devices for both hematoma detection in the brain and early tumor detection in the breast is achieved using image reconstruction which allows a mapping of the position dependent contrast diffusive propagation constants, which are related to the optical absorption coefficient and scattering coefficient in the tissue, at near infrared wavelengths. Spatial resolutions in the range of 5 mm for adult brain sizes and breast sizes can be achieved. The image reconstruction utilizes WKB approximation on most probable diffusion paths which has as lowest order approximation the straight line-of-sight between the plurality of sources and the plurality of detectors. The WKB approximation yields a set of linear equations in which the contrast optical absorption coefficients are the unknowns and for which signals can be generated to produce a pixel map of the contrast optical resolution of the scanned tissue. 58 figs.

  20. Scannerless laser range imaging using loss modulation

    DOE Patents [OSTI]

    Sandusky, John V. (Albuquerque, NM)

    2011-08-09T23:59:59.000Z

    A scannerless 3-D imaging apparatus is disclosed which utilizes an amplitude modulated cw light source to illuminate a field of view containing a target of interest. Backscattered light from the target is passed through one or more loss modulators which are modulated at the same frequency as the light source, but with a phase delay .delta. which can be fixed or variable. The backscattered light is demodulated by the loss modulator and detected with a CCD, CMOS or focal plane array (FPA) detector to construct a 3-D image of the target. The scannerless 3-D imaging apparatus, which can operate in the eye-safe wavelength region 1.4-1.7 .mu.m and which can be constructed as a flash LADAR, has applications for vehicle collision avoidance, autonomous rendezvous and docking, robotic vision, industrial inspection and measurement, 3-D cameras, and facial recognition.

  1. Line-imaging Fabry-Perot interferometer

    SciTech Connect (OSTI)

    Mathews, A.R.; Warnes, R.H.; Hemsing, W.F.; Whittemore, G.R.

    1990-01-01T23:59:59.000Z

    A method for measuring the velocity history of a line element on a shock-loaded solid has been demonstrated. Light from single-frequency laser is focused through a cylindrical lens to a line on a moving target. The return Doppler-shifted image is passed through a Fabry-Perot interferometer. Because only specific combinations of incident light angle and frequency can pass through the interferometer the output is an incomplete image of the moving target appearing as a set of fringes. This image is focused onto an electronic streak camera and swept in time. The fringe pattern changes with time as the target surface moves, allowing determination of velocity for each point on the target that forms a fringe. Because the velocity can only be measured at the fringe positions, it is necessary to use an interpolating polynomial to obtain a continuous function of time and velocity along the sampled lien. 9 refs., 7 figs.

  2. Obstacle penetrating dynamic radar imaging system

    DOE Patents [OSTI]

    Romero, Carlos E. (Livermore, CA); Zumstein, James E. (Livermore, CA); Chang, John T. (Danville, CA); Leach, Jr.. Richard R. (Castro Valley, CA)

    2006-12-12T23:59:59.000Z

    An obstacle penetrating dynamic radar imaging system for the detection, tracking, and imaging of an individual, animal, or object comprising a multiplicity of low power ultra wideband radar units that produce a set of return radar signals from the individual, animal, or object, and a processing system for said set of return radar signals for detection, tracking, and imaging of the individual, animal, or object. The system provides a radar video system for detecting and tracking an individual, animal, or object by producing a set of return radar signals from the individual, animal, or object with a multiplicity of low power ultra wideband radar units, and processing said set of return radar signals for detecting and tracking of the individual, animal, or object.

  3. 2D microwave imaging reflectometer electronics

    SciTech Connect (OSTI)

    Spear, A. G.; Domier, C. W., E-mail: cwdomier@ucdavis.edu; Hu, X.; Muscatello, C. M.; Ren, X.; Luhmann, N. C. [Electrical and Computer Engineering, University of California, Davis, California 95616 (United States); Tobias, B. J. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)

    2014-11-15T23:59:59.000Z

    A 2D microwave imaging reflectometer system has been developed to visualize electron density fluctuations on the DIII-D tokamak. Simultaneously illuminated at four probe frequencies, large aperture optics image reflections from four density-dependent cutoff surfaces in the plasma over an extended region of the DIII-D plasma. Localized density fluctuations in the vicinity of the plasma cutoff surfaces modulate the plasma reflections, yielding a 2D image of electron density fluctuations. Details are presented of the receiver down conversion electronics that generate the in-phase (I) and quadrature (Q) reflectometer signals from which 2D density fluctuation data are obtained. Also presented are details on the control system and backplane used to manage the electronics as well as an introduction to the computer based control program.

  4. A software framework for image processing

    SciTech Connect (OSTI)

    Garren, D.A. [Raytheon E-Systems, Garland Operations, TX (United States)

    1996-12-31T23:59:59.000Z

    There exists a great potential for the development of customizable image processing software that accommodates a wide variety of customers and applications. Such software would be able to read and process the many common image file formats, in addition to allowing the incorporation of those that have been custom made. Furthermore, the software would have the ability to handle the infinite variety of accompanying support files, which can contain quite different information for various applications and customers. A software framework designed to read and process this wide variety of input image files and support files would be extremely valuable. This paper develops the foundation of this proposed software architecture by using a composite of several common design patterns. Any similar software framework required to process input information and corresponding algorithms can benefit from the exposition of these composite design structures.

  5. Forensic imaging tools for law enforcement

    SciTech Connect (OSTI)

    SMITHPETER,COLIN L.; SANDISON,DAVID R.; VARGO,TIMOTHY D.

    2000-01-01T23:59:59.000Z

    Conventional methods of gathering forensic evidence at crime scenes are encumbered by difficulties that limit local law enforcement efforts to apprehend offenders and bring them to justice. Working with a local law-enforcement agency, Sandia National Laboratories has developed a prototype multispectral imaging system that can speed up the investigative search task and provide additional and more accurate evidence. The system, called the Criminalistics Light-imaging Unit (CLU), has demonstrated the capabilities of locating fluorescing evidence at crime scenes under normal lighting conditions and of imaging other types of evidence, such as untreated fingerprints, by direct white-light reflectance. CLU employs state of the art technology that provides for viewing and recording of the entire search process on videotape. This report describes the work performed by Sandia to design, build, evaluate, and commercialize CLU.

  6. Neutron Imaging Reveals Internal Plant Hydraulic Dynamics

    SciTech Connect (OSTI)

    Warren, Jeffrey [ORNL; Bilheux, Hassina Z [ORNL; Kang, Misun [ORNL; Voisin, Sophie [ORNL; Cheng, Chu-Lin [ORNL; Horita, Jusuke [ORNL; Perfect, Edmund [ORNL

    2013-01-01T23:59:59.000Z

    Many terrestrial ecosystem processes are constrained by water availability and transport within the soil. Knowledge of plant water fluxes is thus critical for assessing mechanistic processes linked to biogeochemical cycles, yet resolution of root structure and xylem water transport dynamics has been a particularly daunting task for the ecologist. Through neutron imaging, we demonstrate the ability to non-invasively monitor individual root functionality and water fluxes within Zea mays L. (maize) and Panicum virgatum L. (switchgrass) seedlings growing in a sandy medium. Root structure and growth were readily imaged by neutron radiography and neutron computed tomography. Seedlings were irrigated with water or deuterium oxide and imaged through time as a growth lamp was cycled on to alter leaf demand for water. Sub-millimeter scale resolution reveals timing and magnitudes of root water uptake, redistribution within the roots, and root-shoot hydraulic linkages, relationships not well characterized by other techniques.

  7. Imaging techniques utilizing optical fibers and tomography

    SciTech Connect (OSTI)

    Wilke, M.; King, N.S.P.; Gray, N.; Johnson, D.; Esquibel, D.; Nedrow, P.; Ishiwata, S.

    1985-01-01T23:59:59.000Z

    Two-dimensional, time-dependent images generated by neutrons, gamma rays, and x-rays incident on fast scintillators are relayed to streak and video cameras over optical fibers. Three dimensions, two spatial and one temporal, have been reduced to two, one in space and time utilizing sampling methods permitting reconstruction of a time-dependent, two-dimensional image subsequent to data recording. The manner in which the sampling is done optimized the ability to reconstruct the image via a maximization of entropy algorithm. This method uses four linear fiber optic arrays typically 30 meters long and up to 35 elements each. A further refinement of this technique collapses the linear array information into four single fibers by wavelength multiplexing. This permits economical transmission of the data over kilometer distances to the recording equipment.

  8. Isotropic 3D fast spin-echo imaging versus standard 2D imaging at 3.0 T of the knee—image quality and diagnostic performance

    E-Print Network [OSTI]

    2009-01-01T23:59:59.000Z

    standard 2D imaging at 3.0 T of the knee—image quality andMR imaging was performed at 3.0 T in 50 patients. Imagesat 1.5 T, while we used 3.0 T, which can potentially enhance

  9. Data Driven Discovery in Imaging and Spectroscopy

    SciTech Connect (OSTI)

    Rajan, Krishna [Iowa State University

    2006-06-07T23:59:59.000Z

    This talk will outline a process called "materials informatics," which permits one to survey complex, multiscale information in a high-throughput, statistically robust, and yet physically meaningful manner. Examples will be provided in a number of different applications of imaging and spectroscopy including neutron diffraction, EELS images, and other microanalysis techniques. The integrations of informatics with spectroscopy data in combinatorial experiments will be shown as a means of signficantly accelerating the interpretation of complex data from high-throughput experiments. The talk will conclude with a discussion on the value of including a materials informatics component for addressing the challenges of data deluge from large-scale scattering sources.

  10. Male body image: critical measurement issues

    E-Print Network [OSTI]

    Brown, Joshua Daniel

    2002-01-01T23:59:59.000Z

    12 16 RESULTS. . . 18 Companng the SM and the BIA m the Assessment of Body Image. How Accurate Were Males and Females m Gauging Their Musculanty and Body Fatness' ?. . . How Accurate Were Males and Females m Gauging What the Opposite Sex Found...-wise Compansons for Quesuon Main Effects wtth BF%. Male and Female. 49 9 Comparmg Effect Sizes (Current vs. Ideal) Body Image Assessment (BIA) vs Somatomorphic Matnx (SM) 50 10 Factor Structure of the Affective Body Satisfaction (ABS). 51 11 Comparing Explamed...

  11. Anger camera image generation with microcomputers

    E-Print Network [OSTI]

    Williams, Karl Morgan

    1988-01-01T23:59:59.000Z

    ANGER CAMERA IMAGE GENERATJON WITH iMICR0C0MPJJTERS A Thesis R, 'RI. MGVGAN NIJ. J. IAPLS SubiniL', ti tc: tbe ' taNua - CnlILEr nf Hnivetui ty ;-'r' Lal . '. . '. 6i', i. -ent oL th: ie9uite. . ;List. )i Lhe 4 El'. : ol MASTER 09 SC ENCE May... that with the u e of an innovat ive 'nterfsce system and appropriate software, a microcomputer was a). le tc acquire, display, and analyze Anger came;a images. The interface board designed for this projec. includes A ? D convert. era, a wo page memory system...

  12. Reflective optical imaging systems with balanced distortion

    DOE Patents [OSTI]

    Hudyma, Russell M. (San Ramon, CA)

    2001-01-01T23:59:59.000Z

    Optical systems compatible with extreme ultraviolet radiation comprising four reflective elements for projecting a mask image onto a substrate are described. The four optical elements comprise, in order from object to image, convex, concave, convex and concave mirrors. The optical systems are particularly suited for step and scan lithography methods. The invention enables the use of larger slit dimensions associated with ring field scanning optics, improves wafer throughput, and allows higher semiconductor device density. The inventive optical systems are characterized by reduced dynamic distortion because the static distortion is balanced across the slit width.

  13. Reflective optical imaging system with balanced distortion

    DOE Patents [OSTI]

    Chapman, Henry N. (Sunol, CA); Hudyma, Russell M. (San Ramon, CA); Shafer, David R. (Fairfield, CT); Sweeney, Donald W. (San Ramon, CA)

    1999-01-01T23:59:59.000Z

    An optical system compatible with short wavelength (extreme ultraviolet) An optical system compatible with short wavelength (extreme ultraviolet) radiation comprising four reflective elements for projecting a mask image onto a substrate. The four optical elements comprise, in order from object to image, convex, concave, convex and concave mirrors. The optical system is particularly suited for step and scan lithography methods. The invention enables the use of larger slit dimensions associated with ring field scanning optics, improves wafer throughput and allows higher semiconductor device density. The inventive optical system is characterized by reduced dynamic distortion because the static distortion is balanced across the slit width.

  14. A residual hybrid encoder for image processing

    E-Print Network [OSTI]

    Beck, John Andrew

    1980-01-01T23:59:59.000Z

    are typically digitized to a range of 256 dif- ferent gray levels, most differences between ad]acent picture elements (pixels or pel) are in a range of about 20 gray level values [5], because of the high correlation in an image. DPCM makes use... an infinite bit rate, degradation is expected at lower bit rates. Other problems with DPCM are the dependence on image statistics, and sensitivity to channel errors. A channel error is propagated to all subsequent samples until a reset operation...

  15. Bistatic SAR: Signal Processing and Image Formation.

    SciTech Connect (OSTI)

    Wahl, Daniel E.; Yocky, David A.

    2014-10-01T23:59:59.000Z

    This report describes the significant processing steps that were used to take the raw recorded digitized signals from the bistatic synthetic aperture RADAR (SAR) hardware built for the NCNS Bistatic SAR project to a final bistatic SAR image. In general, the process steps herein are applicable to bistatic SAR signals that include the direct-path signal and the reflected signal. The steps include preprocessing steps, data extraction to for a phase history, and finally, image format. Various plots and values will be shown at most steps to illustrate the processing for a bistatic COSMO SkyMed collection gathered on June 10, 2013 on Kirtland Air Force Base, New Mexico.

  16. Wide field imaging of distant clusters

    E-Print Network [OSTI]

    T. Treu

    2004-08-05T23:59:59.000Z

    Wide field imaging is key to understanding the build-up of distant clusters and their galaxy population. By focusing on the so far unexplored outskirts of clusters, where infalling galaxies first hit the cluster potential and the hot intracluster medium, we can help separate cosmological field galaxy evolution from that driven by environment. I present a selection of recent advancements in this area, with particular emphasis on Hubble Space Telescope wide field imaging, for its superior capability to deliver galaxy morphologies and precise shear maps of distant clusters.

  17. Compact Imaging Spectrometer Utilizing Immersed Gratings

    DOE Patents [OSTI]

    Chrisp, Michael P. (Danville, CA); Lerner, Scott A. (Corvallis, OR); Kuzmenko, Paul J. (Livermore, CA); Bennett, Charles L. (Livermore, CA)

    2006-03-21T23:59:59.000Z

    A compact imaging spectrometer with an immersive diffraction grating that compensates optical distortions. The imaging spectrometer comprises an entrance slit for transmitting light, a system for receiving the light and directing the light, an immersion grating, and a detector array. The entrance slit, the system for receiving the light, the immersion grating, and the detector array are positioned wherein the entrance slit transmits light to the system for receiving the light and the system for receiving the light directs the light to the immersion grating and the immersion grating receives the light and directs the light through an optical element to the detector array.

  18. 3-D capacitance density imaging system

    DOE Patents [OSTI]

    Fasching, G.E.

    1988-03-18T23:59:59.000Z

    A three-dimensional capacitance density imaging of a gasified bed or the like in a containment vessel is achieved using a plurality of electrodes provided circumferentially about the bed in levels and along the bed in channels. The electrodes are individually and selectively excited electrically at each level to produce a plurality of current flux field patterns generated in the bed at each level. The current flux field patterns are suitably sensed and a density pattern of the bed at each level determined. By combining the determined density patterns at each level, a three-dimensional density image of the bed is achieved. 7 figs.

  19. Imaging Gene Expression | The Ames Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School footballHydrogenIT |Hot SpringsemployedImagerImaging

  20. Imaging Lithium Air Electrodes | ornl.gov

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School footballHydrogenIT |Hot SpringsemployedImagerImagingNeutron