%0 Journal Article
%T Gradual gray-watermark embedding algorithm in the wavelet domain<br>一种基于小波域的灰度水印逐层嵌入算法
%A WANG Chang-yuan
%A PENG Dai-yuan
%A XU Li
%A YI Xiong-shu
%A <br>王常远
%A 彭代渊
%A 许力
%A 易雄书
%J 计算机应用
%D 2007
%I 
%X A gradual gray-watermarking embedding scheme based on the wavelet transform was proposed in this paper. It made full use of the invisibility of the Human Vision System (HVS) in the algorithm. The watermarking digitals were divided into bits plane. Every bits plane were permuted and converted into 1-D array. As the value gradually decreased by half from layer to layer in the wavelet domain, all important coefficients of each layer were randomly searched, the 1-D array watermark compared by the bit plane was embedded into the corresponding layer's importance coefficients according to the watermark's importance. The same coefficient can be embedded by watermark repeatedly, so as to enlarge the embedding capacity. The watermark picture can be reconstructed gradually. When achieving certain degree of similarity, we can stop withdrawing watermark from the picture which was embedded by watermarking at any time. Experimental results show that this algorithm is of good invisibility and robustness.
%K wavelet transform
%K digital watermarking
%K Human Vision System (HVS)
%K invisibility<br>小波变换
%K 数字水印
%K 人类视觉系统
%K 不可见性
%K 小波域
%K 灰度
%K 水印图像
%K 嵌入算法
%K domain
%K wavelet
%K algorithm
%K 可见性
%K 仿真实验
%K 提取
%K 相似度
%K 恢复
%K 渐进式
%K 嵌入容量
%K 随机搜索
%K 系数
%K 嵌入水印
%K 选择
%K 迭代
%K 递减
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=831E194C147C78FAAFCC50BC7ADD1732&aid=14E16CBD27430512914F10E0AAEFA8AC&yid=A732AF04DDA03BB3&vid=DB817633AA4F79B9&iid=B31275AF3241DB2D&sid=2A46E9718B53247E&eid=CB8F7B3BEDA8D32B&journal_id=1001-9081&journal_name=计算机应用&referenced_num=0&reference_num=9