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Proceedings Paper

Validating an analytical technique for calculating detection probability given time-dependent search parameters
Author(s): Melvin H. Friedman; Hee-Sue Choi; Jae Cha; Joseph P. Reynolds
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Paper Abstract

The search problem discussed in this paper is easily stated: given search parameters (Ρ, τ) that are known functions of time, calculate how the probability of a single observer to acquire a target grows with time. This problem was solved analytically in a previous paper. To investigate the validity of the solution, videos generated using NVIG software show the view from a vehicle traveling at two different speeds along a flat, straight road. Small, medium and large sized equilateral triangles with the same gray level as the road but without texture were placed at random positions on a textured road and military observers were tasked to find the targets. Analysis of this video in perception experiments yields experimental probability of detection as a function of time. Static perception tests enabled Ρ and τ to be measured as a function of range for the small, medium and large triangles. Since range is a known function of time, Ρ and τ were known as functions of time. This enabled the calculation of modeled detection probabilities which were then compared with measured detection probabilities.

Paper Details

Date Published: 18 May 2012
PDF: 16 pages
Proc. SPIE 8355, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XXIII, 835511 (18 May 2012); doi: 10.1117/12.921020
Show Author Affiliations
Melvin H. Friedman, U.S. Army Night Vision & Electronic Sensors Directorate (United States)
Hee-Sue Choi, U.S. Army Night Vision & Electronic Sensors Directorate (United States)
Jae Cha, U.S. Army Night Vision & Electronic Sensors Directorate (United States)
Joseph P. Reynolds, U.S. Army Night Vision & Electronic Sensors Directorate (United States)


Published in SPIE Proceedings Vol. 8355:
Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XXIII
Gerald C. Holst; Keith A. Krapels, Editor(s)

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