关键词: 数字水印 多小波变换 奇异值分解 量化 密钥

Abstract:

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

Key words: digital watermarking;DMWT, SVD;quantification;secret key