Share Email Print

Optical Engineering • Open Access

Advances in Target Acquisition Modeling II

Paper Abstract

The problem of modeling electro-optical (EO) systems for the purpose of ground vehicle countermeasure development and system performance evaluation has been around for many years. This special section is devoted to recent advances in (1) computational techniques and testing procedures to predict the detectability of man-made objects in the field and in (2) methods to validate and calibrate these techniques and procedures. Most metrics that are currently used to quantify visual target distinctness and to predict the probability of detection of a target in clutter do not relate to properties of the human visual system. As a result, their predictions do not correlate with the results of human observer tests. A well-known example is the mean square error (MSE) in intensity. Although this metric has a good physical and theoretical basis, it correlates poorly with observer performance. This is due to the fact that the human visual system does not analyze an image in a simple point-by-point manner. Bottom-up grouping mechanisms appear to drive the formation of emergent perceptual units from preattentively extracted stimulus features (e.g., edges or texture elements). When searching for known targets, top-down priming signals may influence the organization of search regions. Salient areas may then be selected for further inspection.

Paper Details

Date Published: 1 September 2001
PDF: 4 pages
Opt. Eng. 40(9) doi: 10.1117/1.1410760
Published in: Optical Engineering Volume 40, Issue 9
Show Author Affiliations
Thomas J. Meitzler, U.S. Army Tank Automotive Research, Development and Engineering Ctr. (United States)
Alexander Toet, TNO Defence, Security and Safety (Netherlands)

© SPIE. Terms of Use
Back to Top