Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!hellgate.utah.edu!cs.utexas.edu!uunet!seismo!esosun!cogen!celerity!celit!billd From: billd@fps.com (Bill Davidson) Newsgroups: comp.graphics Subject: Re: How to map 24-bit RGB to 256 co Message-ID: <600@celit.com> Date: 3 Sep 89 10:14:35 GMT References: <7772@cbmvax.UUCP> <1109@krafla.rhi.hi.is> Sender: daemon@fps.com Reply-To: billd@fps.com (Bill Davidson) Organization: FPS Computing Inc., San Diego CA Lines: 18 In article <1109@krafla.rhi.hi.is> pierre@rhi.hi.is (Kjartan Pierre Emilsson) writes: >A year ago or so, there was a similar discussion and there a method originally >devised by Paul Heckbert was introduced, called Color Cube Compression. >I don't have the original posting but the method went something like that: [a description of Heckbert's MEDIAN CUT algorithm deleted] > and allocating them specially. The reast of the picture can then be > treated with the CCC algorithm. > >P.S: I hope I got this method right. Well it would be right if you called it median cut. It also was a reasonable answer to the question. The CCC algorithm that I know about is the "Color Cell Compression" algorithm which is a data compression algorithm for color images, not a color quantization algorithm. It was published in the SIGGRAPH '86 proceedings. --Bill Davidson