The guy making the Oddmuse:Image_Thumbnails extension is working with this.
I should figure out how it works. perhaps it is a bridge between me and programming in perl.
it can be got here:
http://www.imagemagick.org/
a plethora of examples:
http://www.cit.gu.edu.au/~anthony/graphics/imagick6/
en Melody:
file:///usr/local/share/ImageMagick-6.1.7/index.html
FullPath to convert: /usr/local/bin/convert