Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!apple!well!gors
From: gors@well.UUCP (Gordon Stewart)
Newsgroups: comp.graphics
Subject: Re: How to map 24-bit RGB to best EGA/VGA palette?
Keywords: RGB EGA VGA color
Message-ID: <13381@well.UUCP>
Date: 28 Aug 89 15:47:57 GMT
References: <3129@cbnewsm.ATT.COM> <7743@cbmvax.UUCP> <13319@well.UUCP> <586@celit.com> <4862@eos.UUCP>
Reply-To: gors@well.UUCP (Michael Sierchio)
Distribution: na
Organization: Whole Earth 'Lectronic Link, Sausalito, CA
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Actually, doing R, G & B separately has a few problems -- that's "taxicab"
distance, rather than Euclidean distance, for one -- the other is that such
an error measure relies on a uniform color metric, and the RGB cube is not
uniform, in that equidistant colors in the color cube are not equidistant
to the "standard" observer's perceptual apparatus.

As for the numerous requests for my color selection method without 
histogram, I am trying to work out a paper that gives this as an example of
a novel classification scheme that could be applied to other fields, as well.

-- 
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(Doolan) | (Meyer) | (Sierchio) | (Stewart)