Wavelet Tree Group Modulation (WTGM) for digital image watermarking

Min-Jen Tsai*, Chang Hsing Shen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Scopus citations

Abstract

Differential Energy Watermarking (DEW) based techniques have been applied in DEW, modified schemes of DEW or Wavelet Tree Quantization (WTQ) algorithms by differentiating the transformed coefficient energy to verify the watermark embedding for copyright protection and ownership verification. In this paper, we present a novel differential energy watermarking algorithm based on the wavelet tree group modulation (WTGM) structure. The wavelet coefficients of the image are divided into disjoint tree groups and each tree group contains two sub tree groups. The watermark is embedded in the tree components using the group strategy such that the energy of tree groups is close and each sub-group performs different modulation for watermark embedding. Therefore, the employment of wavelet tree structure, sum-of-subsets and positive/negative modulation effectively improve the watermark robustness. In addition, the contrast sensitive function (CSF) and noise visibility function (NVF) of human visual system are also considered for the better visual quality of the watermarked image. The experimental results demonstrate the effectiveness of WTGM algorithm in terms of robustness and imperceptibility of watermarking.

Original languageEnglish
Title of host publication2007 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '07
DOIs
StatePublished - 6 Aug 2007
Event2007 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '07 - Honolulu, HI, United States
Duration: 15 Apr 200720 Apr 2007

Publication series

NameICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Volume2
ISSN (Print)1520-6149

Conference

Conference2007 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '07
CountryUnited States
CityHonolulu, HI
Period15/04/0720/04/07

Keywords

  • Copyright protection
  • Quantization
  • Wavelet

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  • Cite this

    Tsai, M-J., & Shen, C. H. (2007). Wavelet Tree Group Modulation (WTGM) for digital image watermarking. In 2007 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '07 [4217373] (ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings; Vol. 2). https://doi.org/10.1109/ICASSP.2007.366200