A Novel Digital Image Watermark Algorithm Based on Wavelet Fractal Compression
In the paper, a novel blind watermark algorithm in wavelet domain based on fractal compression to perform watermark embedding and extraction is presented. The fractal encoding is performed on the coefficients at various scales and orientations for a certain wavelet block having self-similarity, and the watermarks sequence is embedded in host image by applying fractal encoding so that the decoded one produces the watermarked image. In addition, the logistic mapping is carried out on the row and column of watermark. What is most important is that the original image isnt necessary in the process of extracting watermark. We tested the algorithm performance in terms of different Stirmark attacking methods, such as JPEG compression, middle-value filtering, noise interference. The experimental results show that the algorithm greatly improved in terms of the watermark robustness and security.
ZHANG Zheng-bao YANG Su-min Kou Ying-zhan Ji Feng-rong
Department of Computer Engineering Department of Missile Engineering, Ordnance Engineering College, Shijiazhuang 050003, China
国际会议
北京
英文
2007-08-05（万方平台首次上网日期，不代表论文的发表时间）