一种基于提升小波和证据理论的视频水印算法  

A Novel Video Watermarking Algorithm Based on Lifting Wavelet and Evidence Theory

作　　者：陈丽萍[1] 孔祥增[1] 姚志强[2] 

机构地区：[1]福建师范大学数学与计算机科学学院,福建福州350108 [2]福建师范大学软件学院,福建福州350108

出　　处：《福建师范大学学报（自然科学版）》2012年第2期41-45,共5页Journal of Fujian Normal University：Natural Science Edition

基　　金：福建省自然科学基金资助项目(2008J0013);福建省教育厅资助项目(JB11019)

摘　　要：对宿主视频序列中每一帧的亮度通道经过提升小波处理后,选择相邻图像方块的中高频小波细节子带,根据人类视觉屏蔽特性嵌入水印,并且应用水印公式构造特殊的水印嵌入后条件,判断提取的水印可信度,然后结合水印证据之间的支持度,根据证据理论对其数据进行融合获得鲁棒水印,实验结果表明该算法具有较强的鲁棒性,能有效抵抗帧裁剪、添加噪声、帧平均、帧交换、MPEG压缩和格式转换等攻击.Firstly, the lifting wavelet transformation is applied in the Y-channel of the host video, then a special embedding the watermarking formula is used to construct a special condition before embedding watermark in its middle and high frequence coefficients based on HVS and motion information. The reliability and the distortion factor of the watermark confi- dence are fused with the evidence theory. At last experiments have proved the algorithm can .effectively resist common attacks for video watermarking and achieve higher robustness.

关 键 词：视频水印 提升小波 证据理论 

分 类 号：TP310.6[自动化与计算机技术—计算机软件与理论]