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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 4, Iss. 8 — Jul. 30, 2009

Evolutionary models of color categorization. I. Population categorization systems based on normal and dichromat observers

Kimberly A. Jameson and Natalia L. Komarova  »View Author Affiliations


JOSA A, Vol. 26, Issue 6, pp. 1414-1423 (2009)
http://dx.doi.org/10.1364/JOSAA.26.001414


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Abstract

The evolution of color categorization is investigated using artificial agent population categorization games, by modeling observer types using Farnsworth–Munsell 100 Hue Test performance to capture human processing constraints on color categorization. Homogeneous populations of both normal and dichromat agents are separately examined. Both types of populations produce near-optimal categorization solutions. While normal observers produce categorization solutions that show rotational invariance, dichromats’ solutions show symmetry-breaking features. In particular, it is found that dichromats’ local confusion regions tend to repel color category boundaries and that global confusion pairs attract category boundaries. The trade-off between these two mechanisms gives rise to population categorization solutions where color boundaries are anchored to a subset of locations in the stimulus space. A companion paper extends these studies to more realistic, heterogeneous agent populations [ J. Opt. Soc. Am. A 26, 1424–1436 (2009) ].

© 2009 Optical Society of America

OCIS Codes
(330.1690) Vision, color, and visual optics : Color
(330.4060) Vision, color, and visual optics : Vision modeling
(330.5020) Vision, color, and visual optics : Perception psychology

ToC Category:
Vision, Color, and Visual Optics

History
Original Manuscript: August 29, 2008
Revised Manuscript: March 5, 2009
Manuscript Accepted: March 6, 2009
Published: May 22, 2009

Virtual Issues
Vol. 4, Iss. 8 Virtual Journal for Biomedical Optics

Citation
Kimberly A. Jameson and Natalia L. Komarova, "Evolutionary models of color categorization. I. Population categorization systems based on normal and dichromat observers," J. Opt. Soc. Am. A 26, 1414-1423 (2009)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=josaa-26-6-1414

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