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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. 22, Iss. 10 — Oct. 1, 2005
  • pp: 2154–2168

Variations in normal color vision. IV. Binary hues and hue scaling

Gokhan Malkoc, Paul Kay, and Michael A. Webster  »View Author Affiliations


JOSA A, Vol. 22, Issue 10, pp. 2154-2168 (2005)
http://dx.doi.org/10.1364/JOSAA.22.002154


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Abstract

We used hue cancellation and focal naming to compare individual differences in stimuli selected for unique hues (e.g., pure blue or green) and binary hues (e.g., blue-green). Standard models assume that binary hues depend on the component responses of red–green and blue–yellow processes. However, variance was comparable for unique and binary hues, and settings across categories showed little correlation. Thus, the choices for the binary mixtures are poorly predicted by the unique hue settings. Hue scaling was used to compare individual differences both within and between categories. Ratings for distant stimuli were again independent, while neighboring stimuli covaried and revealed clusters near the poles of the LvsM and SvsLM cardinal axes. While individual differences were large, mean focal choices for red, blue-green, yellow-green, and (to a lesser extent) purple fall near the cardinal axes, such that the cardinal axes roughly delineate the boundaries for blue vs. green and yellow vs. green categories. This suggests a weak tie between the cone-opponent axes and the structure of color appearance.

© 2005 Optical Society of America

OCIS Codes
(330.1690) Vision, color, and visual optics : Color
(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

ToC Category:
Color Vision

History
Original Manuscript: February 22, 2005
Manuscript Accepted: May 6, 2005
Published: October 1, 2005

Citation
Gokhan Malkoc, Paul Kay, and Michael A. Webster, "Variations in normal color vision. IV. Binary hues and hue scaling," J. Opt. Soc. Am. A 22, 2154-2168 (2005)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-22-10-2154

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