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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. 23, Iss. 10 — Oct. 1, 2006
  • pp: 2359–2372

Frequency of metamerism in natural scenes

David H. Foster, Kinjiro Amano, Sérgio M. C. Nascimento, and Michael J. Foster  »View Author Affiliations


JOSA A, Vol. 23, Issue 10, pp. 2359-2372 (2006)
http://dx.doi.org/10.1364/JOSAA.23.002359


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Abstract

Estimates of the frequency of metameric surfaces, which appear the same to the eye under one illuminant but different under another, were obtained from 50 hyperspectral images of natural scenes. The degree of metamerism was specified with respect to a color-difference measure after allowing for full chromatic adaptation. The relative frequency of metameric pairs of surfaces, expressed as a proportion of all pairs of surfaces in a scene, was very low. Depending on the criterion degree of metamerism, it ranged from about 10<sup>−6</sup> to 10<sup>−4</sup> for the largest illuminant change tested, which was from a daylight of correlated color temperature 25,000 K to one of 4000 K. But, given pairs of surfaces that were indistinguishable under one of these illuminants, the conditional relative frequency of metamerism was much higher, from about 10<sup>−2</sup> to 10<sup>−1</sup>, sufficiently large to affect visual inferences about material identity.

© 2006 Optical Society of America

OCIS Codes
(330.6180) Vision, color, and visual optics : Spectral discrimination

ToC Category:
Vision, Color, and Visual Optics

History
Original Manuscript: December 21, 2005
Revised Manuscript: April 24, 2006
Manuscript Accepted: April 27, 2006

Virtual Issues
Vol. 1, Iss. 11 Virtual Journal for Biomedical Optics

Citation
David H. Foster, Kinjiro Amano, Sérgio M. C. Nascimento, and Michael J. Foster, "Frequency of metamerism in natural scenes," J. Opt. Soc. Am. A 23, 2359-2372 (2006)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-23-10-2359

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