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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Vol. 6, Iss. 4 — Apr. 1, 1989
  • pp: 576–584

Standard surface-reflectance model and illuminant estimation

Shoji Tominaga and Brian A. Wandell  »View Author Affiliations

JOSA A, Vol. 6, Issue 4, pp. 576-584 (1989)

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In the standard reflectance model for inhomogeneous materials it is assumed that light is reflected by two independent mechanisms. One component is reflected at the interface of the material and air. Light reflected by this mechanism does not interact with surface colorant, and its spectral composition is assumed to equal that of the incident light. The second component is reflected after entering and interacting with the subsurface structure of the material. This interaction substantially changes the spectral composition of the reflected light. We adopt a vector analysis technique for testing the standard reflectance model. Further, we develop a computational method to determine the components of the observed spectra, and we obtain an estimate of the illuminant without using a reference white standard. Finally, we evaluate the accuracy of the standard model and the feasibility of the illuminant spectral estimation by using several test objectives.

© 1989 Optical Society of America

Original Manuscript: May 2, 1988
Manuscript Accepted: November 17, 1988
Published: April 1, 1989

Shoji Tominaga and Brian A. Wandell, "Standard surface-reflectance model and illuminant estimation," J. Opt. Soc. Am. A 6, 576-584 (1989)

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