Information-efficient spectral imaging sensor

Title: Information-efficient spectral imaging sensor

Full Record
Other Related Research

Abstract

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 inmore »« less

Inventors:

Sweatt, William C. ^[1]; Gentry, Stephen M. ^[1]; Boye, Clinton A. ^[1]; Grotbeck, Carter L. ^[1]; Stallard, Brian R. ^[1]; Descour, Michael R. ^[2]

(Albuquerque, NM)
(Tucson, AZ)

Issue Date:: 2003-01-01

Research Org.:: SANDIA CORP

OSTI Identifier:: 874984

Patent Number(s):: 6504943

Assignee:: Sandia Corporation (Albuquerque, NM) SNL

DOE Contract Number:: AC04-94AL85000

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: information-efficient; spectral; imaging; sensor; programmable; optical; filter; multispectral; hyperspectral; splits; light; collected; telescope; channels; pixels; row; scanned; image; channel; handle; positive; elements; basis; negative; pixel; disperses; bins; bin; attenuated; value; associated; element; vector; constructed; emphasize; presence; target; constituents; background; imaged; scene; re-imaged; separate; detectors; signals; combined; indication; provides; efficient; determination; opposed; data; intensive; manipulations; required; conventional; systems; optical filter; light collected; /382/348/356/

Citation Formats


                    Sweatt, William C., Gentry, Stephen M., Boye, Clinton A., Grotbeck, Carter L., Stallard, Brian R., and Descour, Michael R. Information-efficient spectral imaging sensor.  United States: N. p., 2003. 
        Web.

Copy to clipboard


                    Sweatt, William C., Gentry, Stephen M., Boye, Clinton A., Grotbeck, Carter L., Stallard, Brian R., & Descour, Michael R. Information-efficient spectral imaging sensor.  United States.

Copy to clipboard


                    Sweatt, William C., Gentry, Stephen M., Boye, Clinton A., Grotbeck, Carter L., Stallard, Brian R., and Descour, Michael R. Wed .  
        "Information-efficient spectral imaging sensor".  United States.  https://www.osti.gov/servlets/purl/874984.

Copy to clipboard


                    
@article{osti_874984,

  title        = {Information-efficient spectral imaging sensor},

  author       = {Sweatt, William C. and Gentry, Stephen M. and Boye, Clinton A. and Grotbeck, Carter L. and Stallard, Brian R. and Descour, Michael R.},

  abstractNote = {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.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2003},

  month        = {1}

}

Copy to clipboard

Patent:

View Patent

Save / Share:

Export Metadata

Save to My Library

Similar records in DOE Patents and OSTI.GOV collections:

Information-Efficient Spectral Imaging Sensor With Tdi

Patent Rienstra, Jeffrey L. (Albuquerque, NM); Gentry, Stephen M. (Albuquerque, NM); Sweatt, William C. (Albuquerque, NM)

A programmable optical filter for use in multispectral and hyperspectral imaging employing variable gain time delay and integrate arrays. A telescope focuses an image of a scene onto at least one TDI array that is covered by a multispectral filter that passes separate bandwidths of light onto the rows in the TDI array. The variable gain feature of the TDI array allows individual rows of pixels to be attenuated individually. The attenuations are functions of the magnitudes of the positive and negative components of a spectral basis vector. The spectral basis vector is constructed so that its positive elements emphasizemore »« less
Full Text Available
Information-based self-organization of sensor nodes of a sensor network

Patent Ko, Teresa H [Castro Valley, CA]; Berry, Nina M [Tracy, CA]

A sensor node detects a plurality of information-based events. The sensor node determines whether at least one other sensor node is an information neighbor of the sensor node based on at least a portion of the plurality of information-based events. The information neighbor has an overlapping field of view with the sensor node. The sensor node sends at least one communication to the at least one other sensor node that is an information neighbor of the sensor node in response to at least one information-based event of the plurality of information-based events.
Full Text Available
Automatic position calculating imaging radar with low-cost synthetic aperture sensor for imaging layered media

Patent Mast, Jeffrey E. (Livermore, CA)

An imaging system for analyzing structures comprises a radar transmitter and receiver connected to a timing mechanism that allows a radar echo sample to be taken at a variety of delay times for each radar pulse transmission. The radar transmitter and receiver are coupled to a position determining system that provides the x,y position on a surface for each group of samples measured for a volume from the surface. The radar transmitter and receiver are moved about the surface to collect such groups of measurements from a variety of x,y positions. Return signal amplitudes represent the relative reflectivity of objectsmore »« less
Full Text Available
Single photon imaging and timing array sensor apparatus and method

Patent Smith, R. Clayton (Boulder, CO)

An apparatus and method are disclosed for generating a three-dimension image of an object or target. The apparatus is comprised of a photon source for emitting a photon at a target. The emitted photons are received by a photon receiver for receiving the photon when reflected from the target. The photon receiver determines a reflection time of the photon and further determines an arrival position of the photon on the photon receiver. An analyzer is communicatively coupled to the photon receiver, wherein the analyzer generates a three-dimensional image of the object based upon the reflection time and the arrival position.
Full Text Available
Megavoltage imaging with a photoconductor based sensor

Patent Partain, Larry Dean [Los Altos, CA]; Zentai, George [Mountain View, CA]

A photodetector for detecting megavoltage (MV) radiation comprises a semiconductor conversion layer having a first surface and a second surface disposed opposite the first surface, a first electrode coupled to the first surface, a second electrode coupled to the second surface, and a low density substrate including a detector array coupled to the second electrode opposite the semiconductor conversion layer. The photodetector includes a sufficient thickness of a high density material to create a sufficient number of photoelectrons from incident MV radiation, so that the photoelectrons can be received by the conversion layer and converted to a sufficient of rechargemore »« less
Full Text Available

Similar Records