buxieyigu@gmail.com wrote:

> is there some lib can do image compare  thank you

What sort of comparison do you want to do? If you need to know whether two image
files are identical then File::Compare will help:

  http://search.cpan.org/~rgarcia/perl-5.10.0/lib/File/Compare.pm

But if the two images are in different formats or you want to know if they are
visually similar but not necessarily identical then the task is a lot harder,
although Image::Compare may do what you want. Read about it here:

  http://search.cpan.org/~avif/Image-Compare-0.5/lib/Image/Compare.pm

HTH,

Rob