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"indexed" colors

On Wed, 11 Apr 2001, Kingsly John wrote:

> GIF's PNG etc are indexed images... they have a fixed number of colors
> which is stores in a color table(palette).. and then the image is rendered
> using the index number for the colors in the table/palette (so if you have

i think even X does this when color-depth is set to 8 otherwise it would
be too restrictive. All the other applications  using this index (color-map).
I dont know if any quantization ( mapping close clors to a same index )
takes place or not.

-- sreangsu