Quantization or Colour Reduction Information required

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2 total messages Started by Nigel Senior Fri, 08 Jan 1993 06:17

#39

Author: Nigel Senior
Date: Fri, 08 Jan 1993 06:17

28 lines
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: I am doing some work which involves reducing the number of colours in PCX
: images from 256 down to around 25. Currently I am reducing colours by
: merging similar colours, removing colours with small quantities, using
: Heckbert's median cut technique and using Fletcher's box and merge
: technique. While these techniques are good, reducing the number of colours
: in an image to 25 is a bit hit and miss, hence any extra techniques would
: be most appreciated. I am also generally after information related to
: color comparison and transformation specifically related to perceptual
: spaces such as CIE LUV etc. Any suggestions would be most gratefully
: accepted.
: 
: Thank you in advance
: Cheers
: Nigel Senior











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Re: Quantization or Colour Reduction Information required

#44

Author: Ferdinand Oeinck
Date: Mon, 11 Jan 1993 23:16

17 lines
1306 bytes

nige@werple.apana.org.au (Nigel Senior) writes:

> : technique. While these techniques are good, reducing the number of colours
> : in an image to 25 is a bit hit and miss, hence any extra techniques would
> : be most appreciated. I am also generally after information related to
Try the octree algorithm published in 'Graphics Gems 2', page 287,
isbn 0-12-2866165-5.

> : 
> : Thank you in advance
> : Cheers
> : Nigel Senior
Ferdinand.

--
Moderated by SCRI Vis <>           Submissions to: graphics@scri1.scri.fsu.edu
Guy, John R. Murray   <> Administrivia to: graphics-request@scri1.scri.fsu.edu

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