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Dither Modulation in the Logarithmic Domain

  • Pedro Comesaña
  • Fernando Pérez-González
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5041)

Abstract

Scaling attacks are well-known to be some of the most harmful strategies against quantization-based watermarking methods, as they desynchronize the decoder, completely ruining the performance of the watermarking system with almost non perceptually altering the watermarked signal. In this paper we propose a new family of quantization-based methods, based on both Dither Modulation and Spread Transform Dither Modulation, oriented to deal with those attacks, and which presents another outstanding property: they produce perceptually shaped watermarks.

Keywords

Data Hiding Quantization Step Host Signal Watermark Signal Quantization Index Modulation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • Pedro Comesaña
    • 1
  • Fernando Pérez-González
    • 1
  1. 1.Signal Theory and Communications DepartmentUniversity of VigoVigoSpain

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