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Based on a paper about “copy-move forgery”,

posted by Jason Kottke   Apr 04, 2008

Based on a paper about “copy-move forgery”, a couple of programmers have come up with a program that algorithmically detects whether a photograph has been photoshopped using the cloning technique. It works very well on Adnan Hajj’s doctored Reuters photo of an attack on Beirut.

See also: how to detect photo forgeries.

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