標題: Differential energy based watermarking algorithm using wavelet tree group modulation (WTGM) and Human Visual System
作者: Tsai, Min-Jen
Shen, Chang-Hsing
資訊管理與財務金融系 註:原資管所+財金所
Department of Information Management and Finance
關鍵字: copyright protection;Human Visual System;image watermarking;wavelet;wavelet tree quantization
公開日期: 1-Aug-2008
摘要: Wavelet tree based watermarking algorithms are using the wavelet coefficient energy difference for copyright protection and ownership verification. WTQ (Wavelet Tree Quantization) algorithm is the representative technique using energy difference for watermarking. According to the cryptanalysis on WTQ, the watermark embedded in the protected image can be removed successfully. In this paper, we present a novel differential energy watermarking algorithm based on the wavelet tree group modulation structure, i.e. WTGM (Wavelet Tree Group Modulation). The wavelet coefficients of host image are divided into disjoint super trees (each super tree containing two sub-super trees). The watermark is embedded in the relatively high-frequency components using the group strategy such that energies of sub-super trees are close. The employment of wavelet tree structure, sum-of-subsets and positive/negative modulation effectively improve the drawbacks of the WTQ scheme for its insecurity. The integration of the HVS (Human Visual System) for WTGM provides a better visual effect of the watermarked image. The experimental results demonstrate the effectiveness of our algorithm in terms of robustness and imperceptibility.
URI: http://dx.doi.org/10.1093/ietfec/e91-a.8.1961
http://hdl.handle.net/11536/29076
ISSN: 0916-8508
DOI: 10.1093/ietfec/e91-a.8.1961
期刊: IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES
Volume: E91A
Issue: 8
起始頁: 1961
結束頁: 1973
Appears in Collections:Conferences Paper


Files in This Item:

  1. 000258394300014.pdf

If it is a zip file, please download the file and unzip it, then open index.html in a browser to view the full text content.