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Proceedings Paper

Camaeleon--camouflage assessment by evaluation of local energy, spatialfrequency, and orientation
Author(s): Richard Hecker
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Paper Abstract

Camaeleon is a computer model developed by us for the assessment of camouflage using digital image processing techniques. The main topic of Camaeleon is a filter bank with bandpass-filters which are similar to the filters constituted by the receptive fields of the neurons in the early stages of the visual cortex. It is possible to obtain estimates of local energy (that is local contrast), local spatial frequency and local edge orientation from images processes by such filters. These features appear to be the most important concerning separation of figure and ground, that is object detection. The histograms of these features--for object and background separately--can be calculated and compared to obtain measures for similarity between object and background. At present, a functional description between calculated measures of similarity and detection probability derived from field studies is prepared. First results show sufficient correlation between similarity measures and detection probability for practical purposes of camouflage assessment and development.

Paper Details

Date Published: 21 September 1992
PDF: 8 pages
Proc. SPIE 1687, Characterization, Propagation, and Simulation of Sources and Backgrounds II, (21 September 1992); doi: 10.1117/12.137861
Show Author Affiliations
Richard Hecker, Industrieanlagen-Betriebsgesellschaft mbH (Germany)

Published in SPIE Proceedings Vol. 1687:
Characterization, Propagation, and Simulation of Sources and Backgrounds II
Dieter Clement; Wendell R. Watkins, Editor(s)

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