craig@weedeater.uucp (Craig Kolb) (09/02/90)
Archive-name: colorquant/27-Aug-90 Original-posting-by: craig@weedeater.uucp (Craig Kolb) Original-subject: Re: What's the best colormap for a 24 bit color image? Archive-site: weedeater.math.yale.edu [130.132.23.17] Archive-directory: /pub Reposted-by: emv@math.lsa.umich.edu (Edward Vielmetti) In article <2969@bruce.cs.monash.OZ.AU> damian@bruce.cs.monash.OZ.AU (Damian Conway) writes: >Is there a similar reference for the variance-based method? Wan, Wong, and Prusinkiewicz, An Algorithm for Multidimensional Data Clustering, Transactions on Mathematical Software, Vol. 14 #2 (June, 1988), pp. 153-162. A C implementation of variance-based color quantization is available via anonymous ftp from weedeater.math.yale.edu (130.132.23.17) as "pub/colorquant.shar". An improved version (with Floyd-Steinberg dithering) comes as part of the Utah Raster Toolkit. Craig