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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 5, Iss. 14 — Nov. 16, 2010

Number of discernible colors for color-deficient observers estimated from the MacAdam limits

Esther Perales, Francisco Miguel Martínez-Verdú, João Manuel Maciel Linhares, and Sérgio Miguel Cardoso Nascimento  »View Author Affiliations


JOSA A, Vol. 27, Issue 10, pp. 2106-2114 (2010)
http://dx.doi.org/10.1364/JOSAA.27.002106


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Abstract

We estimated the number of colors perceived by color normal and color-deficient observers when looking at the theoretic limits of object-color stimuli. These limits, the optimal color stimuli, were computed for a color normal observer and CIE standard illuminant D65, and the resultant colors were expressed in the CIELAB and DIN99d color spaces. The corresponding color volumes for abnormal color vision were computed using models simulating for normal trichromatic observers the appearance for dichromats and anomalous trichomats. The number of colors perceived in each case was then computed from the color volumes enclosed by the optimal colors also known as MacAdam limits. It was estimated that dichromats perceive less than 1% of the colors perceived by normal trichromats and that anomalous trichromats perceive 50%–60% for anomalies in the medium-wavelength-sensitive and 60%–70% for anomalies in the long-wavelength-sensitive cones. Complementary estimates obtained similarly for the spectral locus of monochromatic stimuli suggest less impairment for color-deficient observers, a fact that is explained by the two-dimensional nature of the locus.

© 2010 Optical Society of America

OCIS Codes
(330.1690) Vision, color, and visual optics : Color
(330.1720) Vision, color, and visual optics : Color vision
(330.1730) Vision, color, and visual optics : Colorimetry
(330.6180) Vision, color, and visual optics : Spectral discrimination

ToC Category:
Vision, Color, and Visual Optics

History
Original Manuscript: December 23, 2009
Revised Manuscript: July 26, 2010
Manuscript Accepted: July 30, 2010
Published: September 2, 2010

Virtual Issues
Vol. 5, Iss. 14 Virtual Journal for Biomedical Optics

Citation
Esther Perales, Francisco Miguel Martínez-Verdú, João Manuel Maciel Linhares, and Sérgio Miguel Cardoso Nascimento, "Number of discernible colors for color-deficient observers estimated from the MacAdam limits," J. Opt. Soc. Am. A 27, 2106-2114 (2010)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=josaa-27-10-2106

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