Anthony Thyssen wrote:
In the mean time you can use a LUT to reduce the number of colors
http://www.cit.gu.edu.au/~anthony/graphics/imagick6/color/#color_lut
Great. I can do that with the command-line tools:
convert -depth 8 -size 1x32 gradient:#000-#1f1f1f gradient.pgm
convert image.pgm gradient.pgm -fx 'v.p{0,u*v.h}' -depth 8 reduced.pgm
...but I confess I'm at a loss on how to do it in PerlMagick:
$gradient = new Image:Magick;
$gradient->Read('gradient.pgm');
How do I get $gradient into the Fx function:
$image->Fx(expression=>'v.p{0,u*v.h}');
Sorry if these seem obvious. I have tried my best to search the docs &
google codesearch - there seem to be only 3 instances of use of ->Fx
with Image::Magick on the web, and none of them use colour lookup
tables...
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