In article <slr### [at] linuxparkerrfwicom>, 
ron### [at] povrayorg wrote:

> Most of the posterization filters I've seen seem to try to optimize the 
> colors that are actually used for the image in which they're used. 
> This differs significantly from just chopping off the low-order bits.

Could you give me some information on how this is done?

-- 
Christopher James Huff - Personal e-mail: chr### [at] yahoocom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://chrishuff.dhs.org/
TAG Web page: http://tag.povray.org/

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