Inventors:
Yaghoub Mahdavieh - Palm Harbor FL, US
Assignee:
L-3 Communications Security and Detection Systems Inc. - Woburn MA
International Classification:
G06K 9/00
G01N 23/04
Abstract:
A method of detecting a presence or absence of subject matter of interest, for example, sheet explosives and/or other potential threat objects is provided by various local and/or global gradient analysis methods including determining characteristics of gradient information of regions in an X-ray image to determine if the regions are associated with subject matter of interest for which detection may be desired, for example, contraband, explosives and/or other prohibited or unauthorized material.