[Libav-user] More complex watermarking filters using DCTs etc.

[Liam E-P]

Hi all,

There has been lots of research around using the discrete cosine transform
(DCT) value of blocks [1] for embedding information.

I'm wondering if there's any source code out there for these slightly more
complex and powerful watermarking filters?

Cheers,
Liam Edwards-Playne.

[1]
http://nanocdac.com/wp-content/uploads/2015/11/NE-44.Tampering-Detection-in-Compressed-Digital.pdf
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