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Comparing two images

Subject: Comparing two images
From: Scott Ellsworth <email@hidden>
Date: Sun, 10 Apr 2005 11:20:58 -0700
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Hi, all.

A friend just asked how one would scan approximately 40k images for duplicates.. Anyone able to recommend a Java toolkit for same that works with reasonable speed on the Mac?

This is a terribly complicated problem to do right, but I wanted to try an "off the cuff" fast solution first. Something perhaps a bit more clever than a straight checksum of the image data, like a color histogram. This would let us decide whether something smart that actually analyzes the images is a good idea.

Scott
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