基于Arnold置乱和Hadamard变换的双水印信号预处理算法

An algorithm of dual watermarking signal preprocessing based on Arnold scrambling and Hadamard transformation

本文介绍了一种基于Arnold置乱和Hadamard变换的双水印信号预处理算法,该算法能够将两个数字水印进行加密后混合编码,并且能互不影响地提取水印信号。文中给出了算法的详细步骤,最后通过Matlab进行了仿真实验。该算法易于实现,为多重水印信号的预处理提供了一种可行的方法。

The paper introduces an algorithm of dual watermarking signal preprocessing based on Arnold scrambling and Hadamard transformation.By this algorithm,two watermark images can be encryted,hybrid coded and extratced,but do not affect each other.In this paper,we offer the detailed steps of the algorithm,and simulate the algorithm with Matlab.It is easy to implement and provides a viable feasible method for multiple digital watermarking signal preprocessing.