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Proceedings Paper

Polyhedral gamut representation of natural objects based on spectral reflectance database and its application
Author(s): Hideaki Haneishi; Yasunori Sakuda; Toshio Honda
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Paper 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.

Paper Details

Date Published: 6 June 2002
PDF: 5 pages
Proc. SPIE 4421, 9th Congress of the International Colour Association, (6 June 2002); doi: 10.1117/12.464748
Show Author Affiliations
Hideaki Haneishi, Chiba Univ. (Japan)
Yasunori Sakuda, Chiba Univ. (Japan)
Toshio Honda, Chiba Univ. (Japan)

Published in SPIE Proceedings Vol. 4421:
9th Congress of the International Colour Association
Robert Chung; Allan Rodrigues, Editor(s)

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