基于细胞自动机变换的数字水印算法  

Digital Watermark Algorithm Based on Cellular Automatic Transformation

作　　者：林霖[1] 谭超源[1] 严喻[2] 李炳法[1] 

机构地区：[1]四川大学计算机学院,成都610064 [2]西南交通大学信息科学与技术学院,成都610031

出　　处：《计算机工程》2008年第14期158-160,共3页Computer Engineering

摘　　要：提出一种变换域算法,将细胞自动机变换应用于数字水印上。该算法采用二维细胞自动机基函数产生思想,将原始图像进行细胞自动机变换分解,将已经预处理过的水印图像嵌入载体图像对应的低频区域,保证水印的不可见性,增强水印的鲁棒性。实验结果表明,该算法对常见的攻击如缩放、压缩、滤波和噪声等均有较好的鲁棒性。This paper proposes a new algorithm of digital watermarking on cellular automata transform. The idea of two-dimensional CA transform is introduced into the algorithm. After the original image is disassembled with cellular automata transform, the watermark which is permuted according to some certain rule will be embedded into the low-level of the carrier picture. Therefore, the robustness of the watermark will be tremendous strengthened as well as its imperceptibility. Experimental results show that the algorithm can resist some usual attacks such as zoom, compression, cropping and noise contamination

关 键 词：数字水印 细胞自动机 鲁棒性 规则号 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]