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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

  • Vol. 12, Iss. 9 — Sep. 1, 1995
  • pp: 1877–1883

Illumination-invariant recognition of texture in color images

Glenn Healey and Lizhi Wang  »View Author Affiliations


JOSA A, Vol. 12, Issue 9, pp. 1877-1883 (1995)
http://dx.doi.org/10.1364/JOSAA.12.001877


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Abstract

We represent texture in a color image by using spatial correlation functions defined within and between sensor bands. This representation has been shown to be useful for surface recognition, but the structure of spatial correlation functions depends on the spectral properties of the scene illumination. Using a linear model for surface spectral reflectance with the same number of parameters as the number of classes of photoreceptors, we show that illumination changes correspond to linear transformations of a surface correlation matrix. From this relationship we derive a distance function for comparing sets of spatial correlation functions that can be used for illumination-invariant recognition. This distance function can be computed efficiently from estimated correlation functions. We demonstrate, using a large body of experiments, that this distance function can be used for accurate surface recognition in the presence of large changes in illumination spectral distribution.

© 1995 Optical Society of America

History
Original Manuscript: October 21, 1994
Revised Manuscript: April 28, 1995
Manuscript Accepted: May 4, 1995
Published: September 1, 1995

Citation
Glenn Healey and Lizhi Wang, "Illumination-invariant recognition of texture in color images," J. Opt. Soc. Am. A 12, 1877-1883 (1995)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-12-9-1877

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