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Proceedings Paper

Using recovered reflectance to predict color
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Paper Abstract

In many applications, it is requested to compute surface color appearance under different illuminants. If multispectral information about surface reflectance is available, the calculus of tristimulus values under illuminants of specified SPD is straightforward. When only colorimetric information is known, the illuminant change is performed adopting transforms based on the Von Kries scaling model (i.e. the Bradford transform). Unfortunately, the three dimensional colorimetric space may be limited for properly computing the change in appearance of colors due to a change of illuminant. In this paper, a solution to this problem is presented. Assumption of the proposed method is that the problem is specific for a domain of colors, and that this domain can be modeled in a three dimensional Gaussian space. Given the domain Gaussian space, colors may be represented through synthesized reflectance spectra. Exploiting synthesized reflectance is proved to be an effective strategy to implement an illuminant change transform.

Paper Details

Date Published: 17 January 2005
PDF: 6 pages
Proc. SPIE 5667, Color Imaging X: Processing, Hardcopy, and Applications, (17 January 2005); doi: 10.1117/12.586946
Show Author Affiliations
Silvia Zuffi, ITC, CNR (Italy)
Raimondo Schettini, DISCo/Univ. degli Studi di Milano-Bicocca (Italy)

Published in SPIE Proceedings Vol. 5667:
Color Imaging X: Processing, Hardcopy, and Applications
Reiner Eschbach; Gabriel G. Marcu, Editor(s)

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