Calibration method for video and radiation imagers
Abstract
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.
- Inventors:
-
- Oak Ridge, TN
- Knoxville, TN
- (Knoxville, TN)
- Clinton, TN
- Issue Date:
- Research Org.:
- UT-Battelle LLC/ORNL, Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1019562
- Patent Number(s):
- 7973276
- Application Number:
- US Patent Application 12/511,385
- Assignee:
- UT-Battelle, LLC (Oak Ridge, TN)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
- DOE Contract Number:
- AC05-00OR22725
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Citation Formats
Cunningham, Mark F, Fabris, Lorenzo, Gee, Timothy F, Goddard, Jr., James S., Karnowski, Thomas P, and Ziock, Klaus-peter. Calibration method for video and radiation imagers. United States: N. p., 2011.
Web.
Cunningham, Mark F, Fabris, Lorenzo, Gee, Timothy F, Goddard, Jr., James S., Karnowski, Thomas P, & Ziock, Klaus-peter. Calibration method for video and radiation imagers. United States.
Cunningham, Mark F, Fabris, Lorenzo, Gee, Timothy F, Goddard, Jr., James S., Karnowski, Thomas P, and Ziock, Klaus-peter. Tue .
"Calibration method for video and radiation imagers". United States. https://www.osti.gov/servlets/purl/1019562.
@article{osti_1019562,
title = {Calibration method for video and radiation imagers},
author = {Cunningham, Mark F and Fabris, Lorenzo and Gee, Timothy F and Goddard, Jr., James S. and Karnowski, Thomas P and Ziock, Klaus-peter},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 05 00:00:00 EDT 2011},
month = {Tue Jul 05 00:00:00 EDT 2011}
}
Works referenced in this record:
The Use of Gamma-Ray Imaging to Improve Portal Monitor Performance
journal, December 2008
- Ziock, Klaus P.; Collins, Jeff; Cunningham, Mark
- IEEE Transactions on Nuclear Science, Vol. 55, Issue 6
The use of gamma-ray imaging to improve portal monitor performance
conference, October 2007
- Ziock, K. P.; Collins, J.; Cunningham, M.
- 2007 IEEE Nuclear Science Symposium Conference Record