一种基于离散小波变换的数字水印算法

概括了数字水印的研究现状和基本原理,分析了基于小波变换的数字水印算法的优势,提出的算法结合了Arnold置乱方法和DWT变换多分辨率特性,采用线性的、不同的嵌入强度的方法,有效的提高了水印的安全性。实验结果表明该算法具有较强的掩蔽性和鲁棒性。

A Digital Watermarking Algorithm Based on Discrete Wavelet Transform

This paper sums up the status of the technique of digital watermarking and its basic principles,then we analyze the advantage of the digital watermarking based on wavelet transform,the algorithm of digital watermarking based on Arnold and DWT by making use of the linear and different embedding operator is proposed,unicl effectively improves the security of the watermarking.The results of the experiment prove the algorithm has better invisibility and robustness.