In article <390fca4b$1@news.povray.org>, "Mark Wagner" 
<mar### [at] gtenet> wrote:

> You might want to take a look at the source code for the GIMP.  It has
> filters for all of these, except (I think) solarize.

Hmm, ok. I would really prefer algorithms to source code, but that could 
be useful. Any links?

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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/
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