Stereo/motion cues in pre-attentive vision processing-some experiments with random-dot stereographic image sequences

Abstract

Exploration of human, low-level, pre-attentive vision processing is facilitated using stroboscopic presentation of sequences of random dot stereograms, which contain only local spatial and temporal information thereby limiting the processing of these images to low level. The paper describes four demonstrations that utilize these sequences to explore the relationships of various cues, i.e. optical flow, stereo disparity, and occlusion, at the low level. To better study these relationships, especially the resolution of conflicting information among the cues, some of the image sequences present information not generally encountered in 'natural' scenes. Dominance of the stereo cue and the complex relationship between optical flow cues and disparity cues are well demonstrated. >