✦ LIBER ✦

A non-PC look at principal components

✍ Scribed by Michael H. Brill

Publisher: John Wiley and Sons
Year: 2002
Tongue: English
Weight: 50 KB
Volume: 28
Category: Article
ISSN: 0361-2317
DOI: 10.1002/col.10116

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Two principal‐component methods are used in color science. For a given data set of spectra, one method finds the best‐fitting subspace about the mean spectrum, and the other finds the best‐fitting subspace about the zero spectrum. The first of these was originally developed for illuminants and the second for reflectance analysis. Yet there seems to be no strong argument for choosing one method over the other, in either case. Hence it is urged that each of us declares which one we are using, even if making that discrimination is considered “non‐PC” (i.e., not “politically correct”). © 2002 Wiley Periodicals, Inc. Col Res Appl, 28, 69–71, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/col.

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