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ImageMagick.pm  view on Meta::CPAN

prefix the parameter name with the filter name separated by a colon:

 http://localhost/images/whatever.gif/Frame/Shade?Frame:color=gold&Shade:color=true

This will again draw a golden frame and will additonaly add a colored shadow.
The parameters for the C<Set> method a prefixed with C<Set:>

 http://localhost/images/whatever.jpg/Frame/Shade?Frame:color=gold&Shade:color=true&Set:quality=10

The C<AIMParameter> configuration diretive can be used to set defaults and/or force
parameters values. So you can say 

 PerlSetVar AIMParameter "font=/usr/images/fonts/arial.ttf !color=red" 

By prefixing the parameter with an !, the parameter values is foreced, so it 
can't be overridden by parameters passed to the hanlder via th URI.

=head2 Caching

Since conversion takes time Apache::ImageMagick caches the result unless you turn
off caching with the C<AIMCache> directive. If a cached image is found