Polyhedral gamut representation of natural objects based on spectral reflectance database and its application

Hideaki Haneishi; Yasunori Sakuda; Toshio Honda

doi:10.1117/12.464748

6 June 2002 Polyhedral gamut representation of natural objects based on spectral reflectance database and its application

Hideaki Haneishi, Yasunori Sakuda, Toshio Honda

Author Affiliations +

Proceedings Volume 4421, 9th Congress of the International Colour Association; (2002) https://doi.org/10.1117/12.464748
Event: 9th Congress of the International Color Association, 2001, Rochester, NY, United States

Abstract

Spectral reflectance of most reflective objects such as natural objects and color hardcopy is relatively smooth and can be approximated by several numbers of principal components with high accuracy. Though the subspace spanned by those principal components represents a space in which reflective objects can exist, it dos not provide the bound in which the samples distribute. In this paper we propose to represent the gamut of reflective objects in more distinct form, i.e., as a polyhedron in the subspace spanned by several principal components. Concept of the polyhedral gamut representation and its application to calculation of metamer ensemble are described. Color-mismatch volume caused by different illuminant and/or observer for a metamer ensemble is also calculated and compared with theoretical one.

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Hideaki Haneishi, Yasunori Sakuda, and Toshio Honda "Polyhedral gamut representation of natural objects based on spectral reflectance database and its application", Proc. SPIE 4421, 9th Congress of the International Colour Association, (6 June 2002); https://doi.org/10.1117/12.464748

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