An asymmetric subspace watermarking method for copyright protection

Authors:
Jengnan Tzeng;Wen-Liang Hwang;I-Liang Chern
Affiliations:
Dept. of Math., Nat. Taiwan Univ., Taiwan;-;-
Venue:
IEEE Transactions on Signal Processing
Year:
2005

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Abstract

We present an asymmetric watermarking method for copyright protection that uses different matrix operations to embed and extract a watermark. It allows for the public release of all information, except the secret key. We investigate the conditions for a high detection probability, a low false positive probability, and the possibility of unauthorized users successfully hacking into our system. The robustness of our method is demonstrated by the simulation of various attacks.