基于中国剩余定理的数字水印分存技术  

Digital Watermark Sharing Based on Chinese Remainder Theorem

作　　者：刘珺[1] 罗守山[1] 吴秋新[2] 钮心忻[2] 杨义先[2] 

机构地区：[1]北京邮电大学理学院,北京100876 [2]北京邮电大学信息工程学院,北京100876

出　　处：《北京邮电大学学报》2002年第1期17-21,共5页Journal of Beijing University of Posts and Telecommunications

基　　金：国家重点基础研究发展规划资助项目 (G19990 35 80 5 );国家杰出青年基金资助项目(6 94 2 5 0 0 1);国家自然科学基金资助项目 (6 9882 0 0 2 ;6 0 0 730 4 9)

摘　　要：提出了一种基于中国剩余定理的数字水印分存算法 .将秘密分存的思想引入到数字水印中 ,实现了基于部分内容提取水印 .该算法具有很好的性能 :算法隐藏效果好 ,凭借肉眼无法看出与原图像的差别 ;恢复水印时不需要原始图像 ;在图像受到损坏的情况下 ,仍可以恢复水印信息 ;具有很好的安全性 。A digital watermark sharing algorithm based on Chinese remainder theorem is proposed. This algorithm is mainly used for the copyright protection for the static pictures. The idea of the secret sharing to the digital watermark is introduced, and the watermark recovering based on incomplete content is realized. The algorithm has some good properties. It has a good hiding effect. The difference between the original and the watermarked pictures can not be perceived by eyes. The original picture is not needed in the recover process. The watermark can still be recovered even though the image was damaged. The algorithm has a good security. The recover process is protected by password. Anyone who don't know the password can't recover the watermark.

关 键 词：数字水印 分存技术 中国剩余定理 

分 类 号：TN918[电子电信—通信与信息系统]