Image::Magick keeps dimensions of loaded file

cowgirl has asked for the wisdom of the Perl Monks concerning the following question:

I am using Image::Magick (PerlMagick) to load a file with dimensions of 250x250 pixels. I then resize it like this:

binmode STDOUT;
$background->Crop(geometry =>'100x100');
$background->Set(size=>'100x100');
$background->Set(compression=>'LZW');   
$background->Write("gif:-");
[download]

However, the image remains 250x250. What am I doing wrong and how can I force it to crop the image? I do not want to use scale as I do not want to scale it.

Comment on Image::Magick keeps dimensions of loaded file Download Code

Replies are listed 'Best First'.
Re: Image::Magick keeps dimensions of loaded file by traveler (Parson) on Aug 16, 2008 at 22:35 UTC
Your Crop needs the equivalent of +repage in order to shrink the canvas. I think your Set should be `$background->Set( page=>'0x0+0+0' );` [download] to get around the fact that perlmagic (at least in the version I've most recently used) has no repage.	[reply] [d/l]
Re: Image::Magick keeps dimensions of loaded file by cowgirl (Acolyte) on Aug 16, 2008 at 20:15 UTC
Actually the image is cropped, but the image doesn't change to a smaller size. It just becomes white around the cropped area.	[reply]
Re^2: Image::Magick keeps dimensions of loaded file by Lawliet (Curate) on Aug 16, 2008 at 20:24 UTC
Without knowing too much about the module, I would say that it is cropping because you are calling Crop(). Take a look at http://flex.ee.uec.ac.jp/texi/ImageMagick/www/perl.html. I think Scale() is what you want. I'm so adjective, I verb nouns! chomp; # nom nom nom	[reply]
Re: Image::Magick keeps dimensions of loaded file by Mr. Muskrat (Canon) on Aug 17, 2008 at 14:18 UTC
Have you tried the first PerlMagick example?	[reply]


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