Remove duplicate images

[Olivier Nicole]

Ivailo,

>> Thanks, I am looking for something a bit more sophisticated, that can
>> find images that have been resized, rotated, gone through some
>> transformations, changed format (gif to png), etc.
> Altering image and performing transformation on it produces a complete
> different binary file and if there is no metadata attached to the image I
> think it is not possible for a software to determine if the images are the
> same. At least not without some hardware and software, used by the top
> spying agencies over the world.

Of course such software exist are are public, for example
http://www.fosshub.com/VisiPics.html but it works only on Windows.

I am looking for something that would work on FreeBSD.

Best regards,

Olivier