OSA's Digital Library

Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Franco Gori
  • Vol. 31, Iss. 4 — Apr. 1, 2014
  • pp: A307–A313

Paradoxical effect of spatially homogenous transparent fields on simultaneous contrast illusions

Erica Dixon and Arthur G. Shapiro  »View Author Affiliations


JOSA A, Vol. 31, Issue 4, pp. A307-A313 (2014)
http://dx.doi.org/10.1364/JOSAA.31.00A307


View Full Text Article

Enhanced HTML    Acrobat PDF (659 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

In simultaneous brightness contrast (SBC) demonstrations, identical mid-luminance disks appear different from each other when one is placed on a black background while the other is placed on a white background. The strength of SBC effects can be enhanced by placing a semi-transparent layer on top of the display (Meyer’s effect). Here, we try to separate the causes of Meyer’s effect by placing a spatially homogenous transparent layer over a standard SBC display, and systematically varying the transmission level ( alpha = 0 , clear; alpha = 1 , opaque) and color (black, gray, white) of the semi-transparent layer. Spatially homogenous transparent layers, which lack spatial cues, cannot be unambiguously interpreted as transparent fields. We measure SBC strength with both matching and ranking procedures. Paradoxically, with black layers, increasing alpha level weakens SBC when measured with a ranking procedure (no Meyer’s effect) and strengthens SBC when measured with a matching procedure (Meyer’s effect). With white and gray layers, neither procedure produces Meyer’s effect. We account for the differences between white and black layers by positing that the visual system separates luminance from contrast. The results suggest that observers attend to different information in the matching and ranking procedures.

© 2014 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
(330.6110) Vision, color, and visual optics : Spatial filtering

ToC Category:
Color sensitivity and appearance

History
Original Manuscript: October 3, 2013
Revised Manuscript: January 7, 2014
Manuscript Accepted: January 10, 2014
Published: February 27, 2014

Virtual Issues
Vol. 9, Iss. 6 Virtual Journal for Biomedical Optics

Citation
Erica Dixon and Arthur G. Shapiro, "Paradoxical effect of spatially homogenous transparent fields on simultaneous contrast illusions," J. Opt. Soc. Am. A 31, A307-A313 (2014)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-31-4-A307

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

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

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

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

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

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

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited