Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!mailrus!umich!umeecs!zip!spencer From: spencer@eecs.umich.edu (Spencer W. Thomas) Newsgroups: comp.graphics Subject: Re: Optimal palette selection for dither? Message-ID: Date: 30 Jan 90 09:22:40 GMT References: <10675@primitive.ADS.COM> Sender: news@zip.eecs.umich.edu Distribution: na Organization: University of Michigan EECS Dept Lines: 15 In-reply-to: jdevries@primitive.ads.com's message of 29 Jan 90 21:47:40 GMT In article <10675@primitive.ADS.COM> jdevries@primitive.ads.com (Jeff De Vries) writes: > My question is, Would you pick the same set if > you knew you were going to dither your output? My friend RGB (his real initials!) and I were just talking about this the other day. We concluded that if you were going to do some sort of error-propagation dither (e.g. Floyd-Steinberg), that you might want to make sure to pick representative colors that spanned the convex hull of your actual colors. This way your error propagation would never diverge. We didn't test it, but it seems reasonable. -- =Spencer (spencer@eecs.umich.edu)