A constructive and unifying framework for zero-bit watermarking

Details A constructive and unifying framework for zero-bit watermarking A constructive and unifying framework for zero-bit watermarking

2006-06-08

arxiv.org/abs/cs/0606034v2

Computer Science

Multimedia

submitted to IEEE Trans. on Information Forensics and Security

Scientific paper

In the watermark detection scenario, also known as zero-bit watermarking, a watermark, carrying no hidden message, is inserted in content. The watermark detector checks for the presence of this particular weak signal in content. The article looks at this problem from a classical detection theory point of view, but with side information enabled at the embedding side. This means that the watermark signal is a function of the host content. Our study is twofold. The first step is to design the best embedding function for a given detection function, and the best detection function for a given embedding function. This yields two conditions, which are mixed into one `fundamental' partial differential equation. It appears that many famous watermarking schemes are indeed solution to this `fundamental' equation. This study thus gives birth to a constructive framework unifying solutions, so far perceived as very different.

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