@inproceedings{748fd54464dd4163b5dd1278e5c72ea0,
title = "The use of gamma-ray imaging to improve portal monitor performance",
abstract = "We have constructed a prototype, rapid-deployment portal monitor that uses visible-light and gamma-ray imaging to allow simultaneous monitoring of multiple lanes of traffic from the side of a roadway. Our Roadside Tracker uses automated target acquisition and tracking (TAT) software to identify and track vehicles in visible light images. The field of view of the visible camera overlaps with and is calibrated to that of a one-dimensional gamma-ray imager. The TAT code passes information on when vehicles enter and exit the system field of view and when they cross gamma-ray pixel boundaries. Based on this information, the gamma-ray imager {"}harvests{"} the gamma-ray data specific to each vehicle, integrating its radiation signature for the entire time that it is in the field of view. In this fashion we are able to generate vehicle-specific radiation signatures and avoid source confusion problems that plague nonimaging approaches to the same problem.",
keywords = "Coded-aperture imager, Gamma-ray detectors, Gamma-ray imagers, Nuclear imaging, Radiation portal monitor",
author = "Ziock, {K. P.} and J. Collins and M. Cunningham and L. Fabris and T. Gee and J. Goddard and F. Habte and T. Karnowski",
year = "2007",
doi = "10.1109/NSSMIC.2007.4437221",
language = "English",
isbn = "1424409233",
series = "IEEE Nuclear Science Symposium Conference Record",
pages = "1198--1208",
booktitle = "2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC",
note = "2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC ; Conference date: 27-10-2007 Through 03-11-2007",
}
