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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: Franco Gori
  • Vol. 31, Iss. 4 — Apr. 1, 2014
  • pp: A239–A246

Color constancy in a scene with bright colors that do not have a fully natural surface appearance

Kazuho Fukuda and Keiji Uchikawa  »View Author Affiliations


JOSA A, Vol. 31, Issue 4, pp. A239-A246 (2014)
http://dx.doi.org/10.1364/JOSAA.31.00A239


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Abstract

Theoretical and experimental approaches have proposed that color constancy involves a correction related to some average of stimulation over the scene, and some of the studies showed that the average gives greater weight to surrounding bright colors. However, in a natural scene, high-luminance elements do not necessarily carry information about the scene illuminant when the luminance is too high for it to appear as a natural object color. The question is how a surrounding color’s appearance mode influences its contribution to the degree of color constancy. Here the stimuli were simple geometric patterns, and the luminance of surrounding colors was tested over the range beyond the luminosity threshold. Observers performed perceptual achromatic setting on the test patch in order to measure the degree of color constancy and evaluated the surrounding bright colors’ appearance mode. Broadly, our results support the assumption that the visual system counts only the colors in the object-color appearance for color constancy. However, detailed analysis indicated that surrounding colors without a fully natural object-color appearance had some sort of influence on color constancy. Consideration of this contribution of unnatural object color might be important for precise modeling of human color constancy.

© 2014 Optical Society of America

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

ToC Category:
Color and lightness constancy

History
Original Manuscript: October 3, 2013
Revised Manuscript: December 14, 2013
Manuscript Accepted: December 27, 2013
Published: February 12, 2014

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

Citation
Kazuho Fukuda and Keiji Uchikawa, "Color constancy in a scene with bright colors that do not have a fully natural surface appearance," J. Opt. Soc. Am. A 31, A239-A246 (2014)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-31-4-A239

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