You can either use the Image::Magick module, or you can call identify, convert etc. using system() or backticks. Here's some code that I used to resize a bunch of images: 
my ($w,$h) = (`identify '$indir/$_'` =~ /(\d+)x(\d+)/);
my $resize = ($w > $h ? "168x118" : "118x168");
system("convert -size $resize -resize $resize '$indir/$_' '$outdir/$ou
+tfile-small.jpg'") == 0 or die "Error converting";

[download]

Using the Image::Magick module will probably make your code a bit cleaner than this, though.

"What should it profit a man, if he should win a flame war, yet lose his cool?"

In reply to Re: How do I invoke ImageMagick by Joost
in thread How do I invoke ImageMagick by Anonymous Monk

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