Detecting if two png images are different

Posted by Benjol on Stack Overflow See other posts from Stack Overflow or by Benjol
Published on 2010-06-01T12:01:41Z Indexed on 2010/06/01 15:03 UTC
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.NET

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diff

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png

(Context: running autohotkey scripts to try and automate some tests. The plan is to take screenshots and then compare them to 'standard' screenshots to detect if output has changed).

Is there a 'clever' way to check if two png images are different?

By clever I mean other than comparing them byte by byte? (after having compared their size, obviously)

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