Wavelet Tree Group Modulation (WTGM) for digital image watermarking

Min-Jen Tsai*, Chang Hsing Shen

*此作品的通信作者

研究成果: Conference contribution同行評審

13 引文 斯高帕斯(Scopus)

摘要

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.

原文English
主出版物標題2007 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '07
DOIs
出版狀態Published - 6 8月 2007
事件2007 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '07 - Honolulu, HI, United States
持續時間: 15 4月 200720 4月 2007

出版系列

名字ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
2
ISSN(列印)1520-6149

Conference

Conference2007 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '07
國家/地區United States
城市Honolulu, HI
期間15/04/0720/04/07

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