Minmax strategies for QIM watermarking subject to attacks with memory

  title={Minmax strategies for QIM watermarking subject to attacks with memory},
  author={Pierre Moulin and Anil Kumar Goteti},
  journal={IEEE International Conference on Image Processing 2005},
This paper examines the role of attacker's memory in quantization index modulation (QIM) watermarking systems. First we derive the attacker's noise distribution that maximizes probability of error of the detector. Next, we derive QIM code parameters that are minmax optimal. The minmax optimal embedding strategy involves randomized lattice rotations, and the corresponding worst noise distributions are isotropic. 

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