Psychophysical and computational studies towards a theory of human stereopsis

摘要

Psychophysical studies are described which pose a strong challenge to models of human stereopsis based on the processing of disparity information within independent spatial frequency tuned binocular channels. These studies support instead the proposal that the processes of human binocular combination integrally relate the extraction of disparity information with the construction of raw primal sketch assertions. This proposal implies global binocular combination rules using principles of figural continuity and cross-channel correspondence to disambiguate local matches found independently within spatial frequency channels. Exploratory small-scale computational experiments with stereo algorithms based on these rules are described and found to be successful in dealing with a variety of stereo inputs. The constraints presented by objects which are exploited by these algorithms are discussed.