Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Discrimination of the spatial derivatives of horizontal binocular disparity

Not Accessible

Your library or personal account may give you access

Abstract

Observers discriminated the relative disparity, disparity gradient, and disparity curvature of surfaces defined by horizontal binocular disparity in random-dot stereograms. In experiment 1, thresholds for discriminating the depth of sinusoidal corrugations were very similar for different corrugation frequencies, despite large differences in disparity gradient and disparity curvature. Thus observers used a relative disparity cue in preference to a slant or curvature cue. Experiment 2 isolated the spatial derivatives of disparity by jittering the other available cues, using surfaces with square-wave, triangle-wave, and parabolic-wave profiles. Weber fractions were 4%–10% for relative disparity, 6%–12% for disparity gradient, and 15%–30% for disparity curvature. Experiment 3 confirmed this result for larger surfaces. The study supports the view that human stereoscopic vision aims to represent the local scene relative to the observer, at the expense of computing intrinsic properties of objects, such as curvature.

© 1997 Optical Society of America

Full Article  |  PDF Article
More Like This
Fine-scale processing in human binocular stereopsis

Julie M. Harris, Suzanne P. McKee, and Harvey S. Smallman
J. Opt. Soc. Am. A 14(8) 1673-1683 (1997)

Pictorial depth cues: a new slant

G. Lee Zimmerman, Gordon E. Legge, and Patrick Cavanagh
J. Opt. Soc. Am. A 12(1) 17-26 (1995)

Discrimination of crossed and uncrossed disparities

David J. Lasley
J. Opt. Soc. Am. A 2(3) 399-403 (1985)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (34)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved