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Watermark Security via Secret Wavelet Packet Subband Structures

  • Werner Dietl
  • Andreas Uhl
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2828)

Abstract

Wavelet packet decompositions generalize the classical pyramidal wavelet structure. We use the vast amount of possible wavelet packet decomposition structures to create a secret wavelet domain and discuss how this idea can be used to improve the security of watermarking schemes. Two methods to create random wavelet packet trees are discussed and analyzed. The security against unauthorized detection is investigated. Using JPEG and JPEG2000 compression we assess the normalized correlation and Peak Signal to Noise Ratio (PSNR) behavior of the watermarks. We conclude that the proposed systems show improved robustness against compression and provide around 21046 possible keys. The security against unauthorized detection is greatly improved.

Keywords

Wavelet Packet JPEG2000 Compression Tree Decomposition Digital Watermark Tree Number 
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

© IFIP International Federation for Information Processing 2003

Authors and Affiliations

  • Werner Dietl
    • 1
  • Andreas Uhl
    • 1
  1. 1.Dept. of Scientific ComputingUniversity of SalzburgSalzburgAustria

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