Abstract
The spectral reflectance of most reflective objects, such as natural objects and color hardcopy, is relatively smooth and can be approximated by several principal components with high accuracy. Although the subspace spanned by those principal components represents a space in which reflective objects exist, it does not provide the limit of the object distribution or the gamut. In this paper we propose to represent the gamut of reflective objects as a convex polyhedron in the subspace spanned by several principal components. The concept of the polyhedral gamut representation based on the spectral reflectance database and its application to the calculation of metamer ensembles are described. The color-mismatch volume caused by different illuminant and/or observer for a metamer ensemble is also calculated and compared with the theoretical ones.
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Haneishi, H. Multidimensional Polyhedral Gamut Representation of Reflective Objects and Calculation of Metamer Ensembles. OPT REV 9, 146–153 (2002). https://doi.org/10.1007/s10043-002-0146-5
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DOI: https://doi.org/10.1007/s10043-002-0146-5