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In response to
"Unrelated - I keep thinking of your anti-repost mechanism here on ST... "
by
Dr.Vermin
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there's two ways to approach that. Simple but flawed way, and complicated but less flawed way.
Posted by
Beryllium (aka grayman)
Mar 1 '13, 16:07
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Simple but flawed: Grab an MD5 hash of the image and compare the fingerprint of the file. Won't work on files that have been even just slightly modified (recompressed, resized).
Complicated but less flawed: Create a new fingerprinting algorithm specifically for images, that can operate regardless of file size and dimensions. This would have the same flaws as facial recognition, but it might be less complicated to implement. This is likely what Google is doing with Google Image Search By Image.
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