Abstract
In this work the range and scaling properties of the cooperative (contextual) interaction that was first proposed by Julesz [Foundations of Cyclopean Perception, University of Chicago Press, Chicago, 1971] to address the correspondence problem in stereopsis is measured. To this end the effect that flanking difference of Gaussians (DoG) patches produce on a perception of a target pair of patches is studied. The relative depth configuration of the target pair can switch from the small disparity gradient to a large disparity gradient state as a result of cooperative effects of the flanking stimuli. It is found that the interaction strength falls with distance. Its range varies for different subjects from 2 to 3 DoG patch sizes and scales proportionally to the size of the stimuli. The results suggest that a very localized cooperative interaction is in effect at a broad range of spatial scales. 2002 Published by Elsevier Science Ltd.
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