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A Statistical Framework for Audio Watermark Detection and Decoding

  • Bilge Gunsel
  • Yener Ulker
  • Serap Kirbiz
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4105)

Abstract

This paper introduces an integrated GMM-based blind audio watermark (WM) detection and decoding scheme that eliminates the decision threshold specification problem which constitutes drawback of the conventional decoders. The proposed method models the statistics of watermarked and original audio signals by Gaussian mixture models (GMM) with K components. Learning of the WM data is achieved in wavelet domain and a Maximum Likelihood (ML) classifier is designed for the WM decoding. Dimension of the learning space is optimized by PCA transformation. Robustness to compression, additive noise and the Stirmark benchmark attacks has been evaluated. It is shown that both WM decoding and detection performance of the introduced integrated scheme outperforms conventional correlation-based decoders. Test results demonstrate that learning in the wavelet domain improves robustness to attacks while reducing complexity. Although performance of the proposed GMM-modeling is slightly better than the SVM-based decoder introduced in [1], significant decrease in computational complexity makes the new method appealing.

Keywords

Support Vector Machine Gaussian Mixture Model Wavelet Domain Detail Coefficient Training Vector 
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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References

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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Bilge Gunsel
    • 1
  • Yener Ulker
    • 1
  • Serap Kirbiz
    • 1
  1. 1.Multimedia Signal Processing and Pattern Recognition Lab., Dept. of Electronics and Communications Eng.Istanbul Technical UniversityIstanbulTurkey

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