基于元胞自动机的多重零水印算法

利用混沌序列随机选择图像元胞自动机变换的低频系数产生初始构型,元胞自动机根据初始构型演化出零水印,然后用其加载有意义的二值水印,从而实现多重水印的零嵌入,从根本上保证了水印的不可见性.由于算法是基于元胞自动机域的,充分利用了元胞自动机复杂多变的特性,使水印有很好的安全性.实验结果表明提出的算法有较好的鲁棒性,也很好地解决了常见零水印方案所面临的问题.

Multiple zero-watermarks algorithm based on cellular automata

The low frequency coefficients of cellular automata trasform(CAT) are chosen randomly by chaos sequences to create initial configurations.Multiple zero-watermarks are evolved out by the cellular automata,which are used to load multiple binary watermarks.The proposed algorithm is based on cellular automata domain and takes advantage of complexity and flexibility features,so the zero-watermarks created are secure.The experimental results indicate that the proposed method is robust and has solved the problems ...