*Runs to look at it real fast*

It appears to use its own library. You will need to make sure to have libraries for the different image types installed though, but you should have them if you managed to get ImageMagick installed you should have most of them. Just be careful if you install from CPAN to have them first, because it will compile anyway without support for libs it couldn't find. (CPAN speeds past the nice little screen that tells you what you've got support for :) )