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Vision Research 40 (2000) 38233827 Stereopsis with persisting and dynamic textures

Summary: Vision Research 40 (2000) 38233827
Stereopsis with persisting and dynamic textures
R.S. Allison *, I.P. Howard
Centre for Vision Research, York Uni6ersity, 103 Farquharson, Toronto, Ontario, Canada M3J 1P3
Received 5 May 2000; received in revised form 18 July 2000
We measured the percept of changing depth from changing disparity in stereograms composed of random-dot textures that were
either persistent or dynamically changed on every frame (a dynamic random-dot stereogram). Disparity was changed between
frames to depict a surface undergoing smooth temporal changes in simulated slant. Matched depth was greater with dynamic
random-dot stereograms than with persistent random-dot stereograms. These results confirm and extend earlier observations at
depth threshold. We posit an explanation based on cue conflict between stereopsis and monocular depth cues. 2000 Elsevier
Science Ltd. All rights reserved.
Keywords: Stereopsis; Cue conflict; Dynamic random-dot stereogram
1. Introduction
Julesz (1971) introduced random-dot stereograms
(RDS) for the study of binocular vision, particularly
stereopsis. In a RDS, similar random-dot textures are
presented to each eye as a stereogram. Disparity can be
introduced by displacing the dots in one eye relative to


Source: Allison, Robert - Department of Computer Science, York University (Toronto)


Collections: Computer Technologies and Information Sciences; Biology and Medicine