基于提升方案小波和水印加密的盲水印算法  

Blind watermarking algorithm based on lifting scheme wavelet and encrypted watermark

作　　者：陈东方[1] 张有清[1] 

机构地区：[1]武汉科技大学计算机科学与技术学院,武汉430065

出　　处：《计算机应用》2008年第3期615-619,共5页journal of Computer Applications

基　　金：湖北省教育厅重点项目(z200511005)

摘　　要：提出一种利用提升方案小波对载体图像进行多个金字塔分解的方法,并结合新的水印置乱加密方法进行数字水印。嵌入水印时,先对水印信息进行扩频,再利用基于模运算的方法嵌入水印。实验结果表明,该算法增强了水印信息的安全性,同时具有很好的透明性和鲁棒性。The watermark algorithm based on pyramid decomposition of lifting scheme wavelet and a new watermark scrambling encryption methods were proposed. Spread spectrum was conducted first, and then it was embedded into watermark by means of integer modulo. The simulation results show that the algorithm enhances the security of watermark and has very strong robustness and transparency.

关 键 词：提升方案小波 金字塔分解 加密 扩频 模运算 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]