Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!nrl-cmf!cmcl2!rna!dan
From: dan@rna.UUCP (Dan Ts'o)
Newsgroups: comp.graphics
Subject: Color enhancement ?
Message-ID: <281@rna.UUCP>
Date: 7 Oct 88 21:32:24 GMT
Organization: Rockefeller University - Neurobiology
Lines: 19


	Are there well-known (hopefully simple) algorithms for enhancing
colors of an RGB image ? If one has a color image whose colors looked
"washed out", how can they be improved ?
	Simplistically, it seems one would want to improve the saturation
without adjusting the hue or color balance. Is that the idea ? That idea
to seem to reduce to removing white while maintaining the color ratios.
Also, is there such a thing as color compression -- to try to capture a
wide dynamic range of colors in a small representation space without the
spatial degeneration involved in dithering.
	Please email replies. Thanks.

				Cheers,
				Dan Ts'o		212-570-7671
				Dept. Neurobiology	dan@rna.rockefeller.edu
				Rockefeller Univ.	...cmcl2!rna!dan
				1230 York Ave.		rna!dan@nyu.arpa
				NY, NY 10021		tso@rockefeller.arpa
							tso@rockvax.bitnet