compare bitmaps

[Junkone]

hi
i am looking for libraries to compare bitmap images in png format. can
it be done in ruby?
seede

 

[Kevin Jackson]

try RMagick the ruby interface to the ImageMagik libs

 

[Alex Young]

hi
i am looking for libraries to compare bitmap images in png format. can
it be done in ruby?
seede

Yes. You want to look at the RMagick library - specifically, if you're
trying to do a pixel-wise difference, you'll want to look at the
Image#composite method, and the DifferenceCompositeOp CompositeOperator.

 

[Farrel Lifson]

hi
i am looking for libraries to compare bitmap images in png format. can
it be done in ruby?
seede

It's probably easiest to generate MD5 hashes for each file and compare those.

Farrel