基于离散小波变换和奇异值分解的盲水印算法

数字水印技术是解决多媒体数字产品版权保护与信息完整性的有效方法。提出了一种基于离散小波变换和奇异值分解的盲数字水印算法，算法利用小波变换和矩阵奇异值本身的特性，将Arnold变换后的水印信息量化地嵌入到原始图像小波低频子带分块奇异值分解后的向量中。实验表明，该算法具有较好的透明性和鲁棒性。

Blind Watermarking Algorithm Based on DWT and SVD

Watermarking is a effective solution of digital technology~ s copyright protection and the information integrity certification. In this paper, we proposed a blind watermarking algorithm which is based on DWT and SVI）. The algorithm utilizes the inherent characteristics of DWT and SVD ,then the watermark is embedded in the sub-blocks of the singular values in the original image＇s low frequency sub-band after being Arnold scrambled. Experimental results show that the algorithm has good invisibility and robustness.