In our experiments, observers are presented with image scenes and asked to search for and identify targets. Targets consist of square boxes with pixel values taken from a different image, inserted into random locations.
Observers identify a suspected target by fixating the point and pressing a button.
Points identified as suspected target locations are shown as green boxes. This data indicates that the observer correctly identified 4 of 5 targets with 1 false alarm. 3062, Orlando, FL, April 1997. 3070, Orlando, FL, April 1997. SPIE Vol. 2742, Orlando, FL, April 1996, pp.