摘要
单变换域水印算法并不是对所有的常见攻击都具有鲁棒性,为了更好地保护数字产品的版权,本文充分利用各单变换域的特征优势,提出了在DCT、SVD混合域中嵌入水印的算法。首先对宿主图像进行分块,对每一块分别进行DCT变换,选取每块左上角的直流系数组成新矩阵,再对该矩阵进行SVD分解,将置乱后的水印嵌入奇异值矩阵中。实验表明,该算法不仅具有较高的安全性,而且对JPEG压缩、滤波、噪声污染等常规图像处理特别是几何攻击都具有较强的鲁棒性。
Single transform domain watermarking algorithm is not robust to all common attacks, to protect copyrights of digital products effectively, in this paper, an algorithm for embedding watermarking in DCT-SVD hybrid domain is proposed by making full use of the characteristic advantages of each single transform domain. at first , the host image is divided into blocks and Discrete Cosine Transform is carried out on each block and the DC coefficients in the upper left corner of each block is selected to construct a new matrix,then, singular value decomposition is carried out on the new matrix to embed scrambled watermarking into the singular value matrix. Experimental results show that this algorithm not only has high security, but also has strong robustness to JPEG compression, filtering, noise pollution and other conventional image processing, especially geometric attacks.
作者
于帅珍
谢道平
YU Shuai-Zhen;XIE Dao-Ping(Department of Electronics and Information Engineering,Anhui University of Finance &Econmics,Bengbu,Anhui 233030)
出处
《牡丹江大学学报》
2019年第10期116-121,共6页
Journal of Mudanjiang University
基金
安徽省高等学校省级自然科学重点研究项目（KJ2017A429）
关键词
ARNOLD置乱
DCT变换
SVD变换
鲁棒性
Arnold Scrambling
Discrete Cosine Transform
Singular value decomposition
robustness
