Setting thresholds in infrared images for the detection of concealed weapons

Mohamed-Adel Slamani; Mark G. Alford; David D. Ferris Jr.

doi:10.1117/12.323218

1 October 1998 Setting thresholds in infrared images for the detection of concealed weapons

Mohamed-Adel Slamani, Mark G. Alford, David D. Ferris Jr.

Proceedings Volume 3460, Applications of Digital Image Processing XXI; (1998) https://doi.org/10.1117/12.323218
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

This paper addresses the problem of finding the important thresholds in a scene for the detection of concealed weapon(s). Whenever the weapon's temperature is very close to that of the human body, the intensities in the area of the weapon are close to those of the human body. Thus, in a histogram, the intensities of the weapon area overlap with those of the human body causing (1) the weapon's intensities not to be identifiable in the histogram of the overall scene, and (2) the weapon not to be visually distinguishable in the scene. This problem is addressed by the mapping procedure of A'SCAPE. The procedure automatically detects all important thresholds in the scene including those separating regions with overlapping histograms. Real data of an IR scene is used to illustrate the procedure.

Citation Download Citation

Mohamed-Adel Slamani, Mark G. Alford, and David D. Ferris Jr. "Setting thresholds in infrared images for the detection of concealed weapons", Proc. SPIE 3460, Applications of Digital Image Processing XXI, (1 October 1998); https://doi.org/10.1117/12.323218

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