一种基于DMWT与SVD相结合的图像数字水印算法

本文提出了一种新的盲数字水印算法，它充分利用了离散多小渡变换（DMWT）的多分辨率特性和矩阵奇异值分解（SVD）所固有的特征，通过量化处理把二值水印图像嵌入到原始图像中。水印的提取不需要原始图像的参与，但受到密钥的限制，不知道密钥的人无法正确地恢复数字水印。实验结果表明了算法的不可感知性、鲁棒性和安全性。

A Digital Watermarking Algorithm for Images Based on DMWT and SVD

A novel blind image digital watermarking algorithm is presented in this paper.It makes full use of the multi-resolution of DMWT and the SVD characteristics of matrix and embeds a binary image watermark into the original image by the quantification process.The watermark can be extracted without the original image,among which a person who does not know the secret key cannot correctly retrieve the watermark.Experimental results indicate that the performance of the proposed watermarking algorithm is invisible,robust and secure.