On the Intractability of Inverting Geometric Distortions in Watermarking Schemes

نویسندگان

  • Maciej Liskiewicz
  • Ulrich Wölfel
چکیده

We examine the problem of watermarking schemes robust against geometric distortions from a complexity theoretic point of view. The main results presented are polynomial time reductions showing that the inversion of geometric distortions is computationally intractable.

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تاریخ انتشار 2005