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Clone Detection

Copymove by John Graham-Cunning detects image manipulations which have been created with the clone tool.

NEW: GIMP plugin added. Compile and install with:
$ CC=g++ CFLAGS=-O3 LIBS=-lpthread gimptool-2.0 --install elsamuko-copy-move.c
You will find the plugin then under Image->Copy Move.

NEW2: W32 version added.

Update1: Linux version with multithreading and can be used for bigger images now.
Update2: Massive speed gain thanks to the hint of Luca Del Tongo:
http://blogs.ugidotnet.org/wetblog/
The calculation only uses the lower frequencies of the DCT now.
Update3: Ignoring "boring" regions while comparison, e.g. where second and third DCT rings are zero.

Original (cc from Mark Hogan):

Cloned out sign:

 $ ./copymove warning_clone.jpg  2 10


Result: Manipulation detected :D

More information:
http://lemonodor.com/archives/2008/02/protecting_journalistic_integrity_algorithmically.html
http://www.jgc.org/blog/2008/02/tonight-im-going-to-write-myself-aston.html
http://www.ws.binghamton.edu/fridrich/Research/copymove.pdf
Y. Huang, et al., Improved DCT-based detection of copy-move forgery in images, Forensic Sci. Int.
(2010), doi:10.1016/j.forsciint.2010.08.001


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copymove.zip
(346k)
El Samuko,
Oct 2, 2010, 5:57 AM
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elsamuko-copy-move-w32.zip
(55k)
El Samuko,
Oct 6, 2010, 8:07 AM
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elsamuko-copy-move.c
(26k)
El Samuko,
Oct 13, 2012, 12:36 PM
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El Samuko,
Oct 13, 2012, 12:50 PM
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