%0 Journal Article
%T 两级扩展离散剪切变换数字水印算法
%A 赵健
%A 韩帆
%A 贾建
%A 刘珊
%A 徐文胜
%J 北京邮电大学学报
%D 2016
%R 10.13190/j.jbupt.2016.s.005
%X 摘要 为了提高数字水印算法的不可见性和健壮性，将水印嵌入到最大熵子带低频大系数和最小熵子带低频小系数，并将扩展离散剪切变换的强方向敏感性引入到数字水印中.在此基础上提出了两级扩展离散剪切变换的数字水印算法.实验结果表明，新算法不仅具有很强的不可见性，加入一系列攻击后，仍能提取出水印信息.新算法具有很强的不可见性和健壮性.</br>In order to improve the invisibility and robustness of digital watermarking algorithm, a new watermark was designed and embedded into large coefficients of low frequency of maximum entropy subband and small coefficients of low frequency of minimum entropy subband. And the strong directional sensitivity of extended discrete shearlet transform was introduced into digital watermarking as well. On this basis, a two-stage extended discrete shearlet transform of digital watermarking algorithm was proposed. Experiments show that the algorithm not only has strong invisibility, after adding a series of attacks, the watermark can still be extracted. The algorithm has strong invisibility and robustness.
%K 数字水印
%K 扩展离散剪切变换
%K 不可见性
%K 健壮性&lt
%K /br&gt
%K Key words： digital watermarking extended discrete shearlet transform invisibility robustness
%U http://journal.bupt.edu.cn/CN/abstract/abstract2894.shtml