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Proceedings Paper

Modeling the effects of image contrast on thermal target acquisition performance
Author(s): Jonathan G. Hixson; Brian Teaney; Eddie L. Jacobs
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Paper Abstract

Most sensors allow the user to adjust a parameter at will that will modify the displayed scene contrasts in the image. This parameter is usually referred to as gain. The current US Army thermal target acquisition model (NVThermIP) accounts for gain by introducing a scaling parameter called scene contrast temperature. First, the current US Army theory of target acquisition is reviewed and the particular means for modeling sensor gain are highlighted. Then the definitions of scene and target contrast are discussed. The results of two paired comparison perception experiments are analyzed. One of the experiments gives insight into a target identification task, and another gives some insight into a search task. Conclusions regarding the limits of applicability of values for scene contrast temperature are then discussed.

Paper Details

Date Published: 15 May 2006
PDF: 11 pages
Proc. SPIE 6207, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XVII, 62070H (15 May 2006); doi: 10.1117/12.668471
Show Author Affiliations
Jonathan G. Hixson, RDECOM CERDEC Night Vision and Electronic Sensors Directorate (United States)
Brian Teaney, RDECOM CERDEC Night Vision and Electronic Sensors Directorate (United States)
Eddie L. Jacobs, RDECOM CERDEC Night Vision and Electronic Sensors Directorate (United States)


Published in SPIE Proceedings Vol. 6207:
Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XVII
Gerald C. Holst, Editor(s)

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