Recent improvements in modeling time limited search

Timothy Edwards; Richard H. Vollmerhausen; Jeremy Cohen; Tim Harris

doi:10.1117/12.477474

29 July 2002 Recent improvements in modeling time limited search

Timothy Edwards, Richard H. Vollmerhausen, Jeremy Cohen, Tim Harris

Proceedings Volume 4719, Infrared and Passive Millimeter-wave Imaging Systems: Design, Analysis, Modeling, and Testing; (2002) https://doi.org/10.1117/12.477474
Event: AeroSense 2002, 2002, Orlando, FL, United States

Abstract

Human perception tests have been performed by Night Vision Electronic Sensor Directorate (NVESD) addressing the process of searching an image with the intent of detecting a target of military importance. Experiments were performed using both real thermal imagery and synthetic imagery generated using 'Paint the Night' simulation. It was demonstrated that trained observers acquire targets much more quickly than previously expected. This insight was gained by changing the instructions the observers were given for the test. Rather than telling the observers that they were being timed, the observers were given a time limit, as short as 3 seconds. When time limited, the observers found targets quicker. Although false alarms per second increased with the shorter time limits, the ratio of false alarms to detected targets did not increase. A modification to the traditional NVESD search model has been developed and incorporated into Army war games and simulations.

Citation Download Citation

Timothy Edwards, Richard H. Vollmerhausen, Jeremy Cohen, and Tim Harris "Recent improvements in modeling time limited search", Proc. SPIE 4719, Infrared and Passive Millimeter-wave Imaging Systems: Design, Analysis, Modeling, and Testing, (29 July 2002); https://doi.org/10.1117/12.477474

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