Motion correction for passive radiation imaging of small vessels in ship-to-ship inspections
Abstract
Passive radiation detection remains one of the most acceptable means of ascertaining the presence of illicit nuclear materials. In maritime applications it is most effective against small to moderately sized vessels, where attenuation in the target vessel is of less concern. Unfortunately, imaging methods that can remove source confusion, localize a source, and avoid other systematic detection issues cannot be easily applied in ship-to-ship inspections because relative motion of the vessels blurs the results over many pixels, significantly reducing system sensitivity. This is particularly true for the smaller watercraft, where passive inspections are most valuable. We have developed a combined gamma-ray, stereo visible-light imaging system that addresses this problem. Data from the stereo imager are used to track the relative location and orientation of the target vessel in the field of view of a coded-aperture gamma-ray imager. Using this information, short-exposure gamma-ray images are projected onto the target vessel using simple tomographic back-projection techniques, revealing the location of any sources within the target. Here,the complex autonomous tracking and image reconstruction system runs in real time on a 48-core workstation that deploys with the system.
- Authors:
-
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1242665
- Alternate Identifier(s):
- OSTI ID: 1359619
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
- Additional Journal Information:
- Journal Volume: 805; Journal ID: ISSN 0168-9002
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; position-sensitive detector; coded-aperture; gamma-ray imager; nuclear imaging; machine vision; vessel tracking
Citation Formats
Ziock, Klaus -Peter, Boehnen, Chris Bensing, Ernst, Joseph M., Fabris, Lorenzo, Hayward, Jason P., Karnowski, Thomas Paul, Paquit, Vincent C., Patlolla, Dilip Reddy, and Trombino, David. Motion correction for passive radiation imaging of small vessels in ship-to-ship inspections. United States: N. p., 2015.
Web. doi:10.1016/j.nima.2015.08.040.
Ziock, Klaus -Peter, Boehnen, Chris Bensing, Ernst, Joseph M., Fabris, Lorenzo, Hayward, Jason P., Karnowski, Thomas Paul, Paquit, Vincent C., Patlolla, Dilip Reddy, & Trombino, David. Motion correction for passive radiation imaging of small vessels in ship-to-ship inspections. United States. https://doi.org/10.1016/j.nima.2015.08.040
Ziock, Klaus -Peter, Boehnen, Chris Bensing, Ernst, Joseph M., Fabris, Lorenzo, Hayward, Jason P., Karnowski, Thomas Paul, Paquit, Vincent C., Patlolla, Dilip Reddy, and Trombino, David. Sat .
"Motion correction for passive radiation imaging of small vessels in ship-to-ship inspections". United States. https://doi.org/10.1016/j.nima.2015.08.040. https://www.osti.gov/servlets/purl/1242665.
@article{osti_1242665,
title = {Motion correction for passive radiation imaging of small vessels in ship-to-ship inspections},
author = {Ziock, Klaus -Peter and Boehnen, Chris Bensing and Ernst, Joseph M. and Fabris, Lorenzo and Hayward, Jason P. and Karnowski, Thomas Paul and Paquit, Vincent C. and Patlolla, Dilip Reddy and Trombino, David},
abstractNote = {Passive radiation detection remains one of the most acceptable means of ascertaining the presence of illicit nuclear materials. In maritime applications it is most effective against small to moderately sized vessels, where attenuation in the target vessel is of less concern. Unfortunately, imaging methods that can remove source confusion, localize a source, and avoid other systematic detection issues cannot be easily applied in ship-to-ship inspections because relative motion of the vessels blurs the results over many pixels, significantly reducing system sensitivity. This is particularly true for the smaller watercraft, where passive inspections are most valuable. We have developed a combined gamma-ray, stereo visible-light imaging system that addresses this problem. Data from the stereo imager are used to track the relative location and orientation of the target vessel in the field of view of a coded-aperture gamma-ray imager. Using this information, short-exposure gamma-ray images are projected onto the target vessel using simple tomographic back-projection techniques, revealing the location of any sources within the target. Here,the complex autonomous tracking and image reconstruction system runs in real time on a 48-core workstation that deploys with the system.},
doi = {10.1016/j.nima.2015.08.040},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = ,
volume = 805,
place = {United States},
year = {Sat Sep 05 00:00:00 EDT 2015},
month = {Sat Sep 05 00:00:00 EDT 2015}
}
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