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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. 11, Iss. 11 — Nov. 1, 1994
  • pp: 2990–3002

Temporal-color space analysis of reflection

Yoichi Sato and Katsushi Ikeuchi  »View Author Affiliations


JOSA A, Vol. 11, Issue 11, pp. 2990-3002 (1994)
http://dx.doi.org/10.1364/JOSAA.11.002990


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Abstract

We propose a novel method to analyze a sequence of color images. A series of color images is examined in a four-dimensional space, which we call the temporal-color space, whose axes are the three color axes red, green, and blue and one temporal axis. The significance of the temporal-color space lies in its ability to represent the change of image color with time. A conventional color space analysis yields a histogram of the colors in an image, only for an instant of time. Conceptually, the two reflection components from the dichromatic-reflection model, the specular-reflection component and the body-reflection component, form two subspaces in temporal-color space. These two components can be extracted at each pixel in the image locally. Using this fact, we analyzed real color images and separated the two reflection components successfully. We did not make any assumptions about surface properties or the global distribution of surface normals. Finally, object shape was recovered.

© 1994 Optical Society of America

History
Original Manuscript: July 22, 1993
Revised Manuscript: June 17, 1994
Manuscript Accepted: June 27, 1994
Published: November 1, 1994

Citation
Yoichi Sato and Katsushi Ikeuchi, "Temporal-color space analysis of reflection," J. Opt. Soc. Am. A 11, 2990-3002 (1994)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-11-11-2990

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