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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    Title :

    Minmax strategies for QIM watermarking subject to attacks with memory


    Contributors:
    Moulin, P. (author) / Goteti, A.K. (author)


    Publication date :

    2005-01-01


    Size :

    235016 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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