Visual search and cued detection performance

Gary Witus; R. Darin Ellis

doi:10.1117/12.440071

18 September 2001 Visual search and cued detection performance

Gary Witus, R. Darin Ellis

Proceedings Volume 4370, Targets and Backgrounds VII: Characterization and Representation; (2001) https://doi.org/10.1117/12.440071
Event: Aerospace/Defense Sensing, Simulation, and Controls, 2001, Orlando, FL, United States

Abstract

Empirical data are presented from a larger-scale, narrow field-of-regard visual search experiment. The target scene characteristics of images taken during the 1995 DISSTAF field observer trials were digitally manipulated to mimic field conditions such as haze and darkness, and vehicle treatments such as camouflage nets and target contrast suppression. The experimental factors induced by the image manipulations all had a significant effect on search performance (hit rate). Data are consistent with psychophysical accounts of visual search. The data were consistent with earlier data from a cued detection task using the same stimulus material. The hit rate in the cued detection experiment explained 85% of the variance in the hit rate form the search experiment. A computational model of human visual discrimination, built to explain cued detection performance, was shown to fit the search data better than would have been expected based on the product independent errors.

Citation Download Citation

Gary Witus and R. Darin Ellis "Visual search and cued detection performance", Proc. SPIE 4370, Targets and Backgrounds VII: Characterization and Representation, (18 September 2001); https://doi.org/10.1117/12.440071

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available