Open AccessIntegration of motion parallax with binocular disparity specifying different surface shapes
Author(s) -
Ichikawa Makoto,
Saida Shinya
Publication year - 2002
Publication title -
japanese psychological research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 30
eISSN - 1468-5884
pISSN - 0021-5368
DOI - 10.1111/1468-5884.00005
Subject(s) - parallax , binocular disparity , depth perception , computer vision , surface (topology) , magnitude (astronomy) , artificial intelligence , perception , motion (physics) , binocular vision , kinetic depth effect , interference (communication) , motion perception , computer science , mathematics , physics , psychology , geometry , computer network , channel (broadcasting) , astronomy , neuroscience
We investigated the interaction between motion parallax and binocular disparity cues in the perception of surface shape and depth magnitude by the use of the random dot stimuli in which these cues specified sinusoidal depth surfaces undulating with different spatial frequencies. When ambiguous motion parallax is inconsistent with unambiguous disparity cue, the reasonable solution for the visual system is to convert the motion signal to the flow on the surface specified by disparity. Two experiments, however, found that the visual system did not always use this reasonable solution; observers often perceived the surface specified by a composite of the two cues, or the surface specified by parallax alone. In the perception of this composite of the two cues, the apparent depth magnitude increased with the increase of the depth magnitude specified by both cues. This indicates that the visual system can combine the depth magnitude information from parallax and disparity in an additive fashion. The interference with parallax by disparity implies that the parallax processing is not independent of the disparity processing.