基于非负矩阵分解的图像脆弱水印算法.pdfVIP

第 卷 第 期 电子设计工程 年 月 19 23 2011 12 Vol.19 No.23 Electronic Design Engineering Dec. 2011 基于非负矩阵分解的图像脆弱水印算法 崔得龙， 孙国玺 （广东石油化工学院计算机与电子信息学院， 广东茂名 525000 ） 摘要： 提出一种基于非负矩阵分解 NMF （Non-negative Matrix Factorization ）的脆弱数字水印算法。 算法利用用户密钥 构造NMF 基矩阵，并在图像NMF 分解过程中保持不变，二值水印图像嵌入 NMF 分解系数矩阵。 实验结果本算法具 有较强的鲁棒性，同时用户密钥保证的算法的脆弱性。 关键词： 非负矩阵分解；数字水印；脆弱水印；Qr 分解 中图分类号： TN911. 7 文献标识码： A 文章编号：1674－6236 （2011 ）23-0178-03 Fragile digital watermarking algorithm based on non-negative matrix factorization CUI De-long ， SUN Guo-xi （ ， ， ， ） College of Computer and Electronic Information Guangdong University of Petrochemical Technology Maoming 525000 China （ ） Abstract: This paper presents a digital watermarking algorithm based on non-negative matrix factorization NMF . The partial representation--based coefficient matrix of a carrier image is constructed by the NMF first ， and the grey watermarking image is embedded to the coefficient matrix. Then the base matrix of NMF is utilized as a key to extract the watermarking. The new NMF2 based algorithm is compared with the DCT-based algorithm in correlative experiment in order to illustrate its effectiveness. The results show that the former is better than the latter in anti-cut and anti-filter condition ， and is as good in other attack conditions. Key words: NMF