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Vision Research 40 (2000) 18691886 Temporal dependencies in resolving monocular and binocular cue

Summary: Vision Research 40 (2000) 1869­1886
Temporal dependencies in resolving monocular and binocular cue
conflict in slant perception
R.S. Allison *, I.P. Howard
Centre for Vision Research, York Uni6ersity, Toronto, Ont., Canada M3J 1P3
Received 6 April 1999; received in revised form 8 November 1999
Observers viewed large dichoptic patterns undergoing smooth temporal modulations or step changes in simulated slant or
inclination under various conditions of disparity­perspective cue conflict and concordance. After presentation of each test surface,
subjects adjusted a comparison surface to match the perceived slant or inclination of the test surface. Addition of conflicting
perspective to disparity affected slant and inclination perception more for brief than for long presentations. Perspective had more
influence for smooth temporal changes than for step changes in slant or inclination and for surfaces presented in isolation rather
than with a zero disparity frame. These results indicate that conflicting perspective information plays a dominant role in
determining the temporal properties of perceived slant and inclination. © 2000 Elsevier Science Ltd. All rights reserved.
Keywords: Stereopsis; Perspective; Cue interaction; Temporal; Slant; Inclination
1. Introduction
The spatial layout of objects and surfaces in a scene
can be derived from a variety of monocular and binoc-
ular cues (Sedgewick, 1986; Howard & Rogers, 1995).


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


Collections: Computer Technologies and Information Sciences; Biology and Medicine