Comparative Study of Wavelet Based Lattice QIM Techniques and Robustness against AWGN and JPEG Attacks

  • Dieter Bardyn
  • Ann Dooms
  • Tim Dams
  • Peter Schelkens
Conference paper

DOI: 10.1007/978-3-642-03688-0_7

Part of the Lecture Notes in Computer Science book series (LNCS, volume 5703)
Cite this paper as:
Bardyn D., Dooms A., Dams T., Schelkens P. (2009) Comparative Study of Wavelet Based Lattice QIM Techniques and Robustness against AWGN and JPEG Attacks. In: Ho A.T.S., Shi Y.Q., Kim H.J., Barni M. (eds) Digital Watermarking. IWDW 2009. Lecture Notes in Computer Science, vol 5703. Springer, Berlin, Heidelberg

Abstract

We study watermarking techniques based on Quantization Index Modulation for which sets of lattice quantizers Qm are used (LQIM). A recipe for constructing such quantizers Qm is proposed, where the size of these sets is variable, so that the payload is easily adaptable. We make a comparative study of 8 dimensional lattices with good quantizer properties, where the embedding is done in the wavelet domain. Along the way, the gap between the theoretical ideas behind QIM and practical systems using lattices is closed by extending techniques, such as dithered quantizers and distortion compensation, from the scalar case to LQIM.

Keywords

Digital Watermarking Quantization Index Modulation Lattice 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Dieter Bardyn
    • 1
  • Ann Dooms
    • 1
  • Tim Dams
    • 1
    • 2
  • Peter Schelkens
    • 1
  1. 1.Dept. of Electronics and Informatics (ETRO)Vrije Universiteit Brussel (VUB), Interdisciplinary Institute for Broadband Technology (IBBT)BrusselsBelgium
  2. 2.Dept. of Applied Engineering (electronica-ict)Artesis University College of AntwerpAntwerpBelgium

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