基于元胞自动机变换的重复水印算法  

Multi-embedding Watermarking Algorithm Based on Cellular Automata Transforms

作　　者：金军[1] 舒红平[2] 

机构地区：[1]四川大学计算机学院,四川成都610065 [2]成都信息工程学院计算机系,四川成都610041

出　　处：《四川大学学报（工程科学版）》2008年第4期132-137,共6页Journal of Sichuan University (Engineering Science Edition)

基　　金：四川省青年科技基金资助项目(06ZQ026-054)

摘　　要：为了在满足水印不可见性和鲁棒性的同时,充分保障水印的安全性,提出了一种元胞自动机域的水印重复嵌入算法。利用元胞自动机的复杂多变的动力学特征,设计一个长的密钥矢量,先对水印进行元胞自动机加密,再对图像子块进行元胞自动机变换,利用纹理掩蔽特征将加密水印重复地嵌入图像子块中,水印检测无需原始图像。实验结果表明提出的算法有很好的鲁棒性、安全性和不可见性。To fully ensure security and satisfies robustness and invisibility,a multi-embedding watermarking algorithm in the cellular automata domain was presented.Taking the advantage of complexity and flexibility of cellular automata s dynamical features,a long key vector was designed.This key vector was used to encrypt watermark and perform cellular automata transforms on each block.The encrypted watermark was embedded into image blocks according to the texture masking feature.The extracting strategy doesn t need ...

关 键 词：元胞自动机 元胞自动机变换 重复嵌入 纹理掩蔽 安全 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]