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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Stephen A. Burns
  • Vol. 24, Iss. 7 — Jul. 1, 2007
  • pp: 1830–1841

Effects of surround articulation on lightness depend on the spatial arrangement of the articulated region

Iris K. Zemach and Michael E. Rudd  »View Author Affiliations


JOSA A, Vol. 24, Issue 7, pp. 1830-1841 (2007)
http://dx.doi.org/10.1364/JOSAA.24.001830


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Abstract

We investigated the effect of surround articulation on the perceived lightness of a target disk. Surround articulation was manipulated by varying either the number of wedges in a surround consisting of wedges of alternating luminance or the number of checks in a surround consisting of a radial checkerboard pattern. In most conditions, increased articulation caused incremental targets to appear lighter and decremental targets to appear darker. But increasing the surround articulation in a way that did not increase the number of target-coaligned edges in the display did not affect the target lightness. We propose that the effects of surround articulation depend on the relationship between the orientations and contrast polarities of the target edges and those of edges present within the surround.

© 2007 Optical Society of America

OCIS Codes
(330.1720) Vision, color, and visual optics : Color vision
(330.5020) Vision, color, and visual optics : Perception psychology
(330.5510) Vision, color, and visual optics : Psychophysics
(330.7310) Vision, color, and visual optics : Vision

ToC Category:
Vision and Color

History
Original Manuscript: August 3, 2006
Revised Manuscript: January 12, 2007
Manuscript Accepted: January 25, 2007
Published: June 13, 2007

Virtual Issues
Vol. 2, Iss. 8 Virtual Journal for Biomedical Optics

Citation
Iris K. Zemach and Michael E. Rudd, "Effects of surround articulation on lightness depend on the spatial arrangement of the articulated region," J. Opt. Soc. Am. A 24, 1830-1841 (2007)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-24-7-1830

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