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From: jfjr@mbunix.mitre.org (Jerome Freedman)
Newsgroups: comp.lang.smalltalk
Subject: RGB color map
Message-ID: <45572@linus.UUCP>
Date: 2 Mar 89 16:10:49 GMT
Sender: news@linus.UUCP
Reply-To: jfjr@mbunix.mitre.org (Freedman)
Organization: The MITRE Corporation, Bedford, Mass.
Lines: 27


 I am writing this for a co-worker. Please atrribute mistakes and
dumbnesses to problems with my transcription

  I am new to the world of color graphics and I am writing (or
trying to write) a program to display a color image. I am working on
a Sun 3/160, Sun Os 3.2 - 4.2 BSD, using smalltalk-80, 8-bit RGB.

  I have two requests

1) Does anyone have adescription of a good "basic" RGB color table.
My color table can have a maximum of 256 colors in it and I want to
select that group of RGB values which gives a "good" cross section of
colors.

2) I also need an alogorithm that takes a given RGB value and chooses
which entry in the basic color table described above that best approximates
a given color.

 Also any suggestions, references, pointers will be appreciated
                                            
                                         Jerry Freedman,Jr
                                         jfjr@mbunix.mitre.org

Jerry Freedman, Jr       "Why did 
jfjr@mbunix.mitre.org      Unix come from the east?"
(617)271-8398