"Optimal distortion compensation for quantization watermarking"

Marius Staring, Job C. Oostveen and A.A.C. Kalker


In this paper we study the problem of optimizing the distortion compensation parameter for the Scalar Costa Scheme, which is a practical version of the class of Distortion Compensated Dither Modulation schemes. In the literature, a number of results are known for finding the value of the distortion compensation parameter that maximizes the capacity of the watermarking channel. Instead, in this paper, we look at minimization of the bit error probability as the criterion for determining the optimal value of the distortion compensation parameter. To this end, we derive a model for the bit error probability, which is subsequently approximated and minimized. This is done both for the cases of Gaussian noise and uniform noise. The results match very well with earlier results by Eggers.



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Copyright © 2003 by the authors. Published version © 2003 by IEEE. Personal use of this material is permitted. However, permission to reprint or republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works, must be obtained from the copyright holder.


BibTeX entry

author = "{Marius Staring and Job C. Oostveen and A.A.C. Kalker}",
title = "{Optimal distortion compensation for quantization watermarking}",
booktitle = "{International Conference on Image Processing}",
address = "{Barcelona, Spain}",
volume = "{2}",
pages = "{727 - 730}",
month = "{September}",
year = "{2003}",

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