基于视觉特性和骑士巡游的变换域视频水印算法  

A TRANSFORM DOMAIN VIDEO WATERMARKING ALGORITHM BASED ON VISUAL FEATURE AND KNIGHT'S TOUR

作　　者：阳溢[1,2] 柏森[1,2] 刘博文[1] 牟宇飞[1,2] 

机构地区：[1]重庆通信学院,重庆400035 [2]应急通信重庆市重点实验室,重庆400035

出　　处：《计算机应用与软件》2014年第7期297-302,共6页Computer Applications and Software

基　　金：国家自然科学基金项目(61272043);重庆市基础与前沿研究计划项目(cstc2013jjB40009)

摘　　要：为了对数字视频进行版权保护,结合人眼视觉特性和骑士巡游相关原理,提出一种在视频I帧亮度分量的DWT-SVD域嵌入水印的算法。先根据视觉特性计算嵌入强度,然后对I帧做离散小波变换和分块奇异值分解,再按骑士巡游路径将水印嵌入到分块奇异值分解后的U矩阵中。提取水印时不需要原始视频的参与。实验结果表明算法具有良好的不可见性和鲁棒性。In order to protect the copyright of digital video, combining with the related principles of human visual features and knight＇ s tour, we present an algorithm which embeds watermarking into DWT-SVD domain of video I-frame luminance components. Firstly, the embedding strength is calculated according to the visual features. Then, the I-frames are applied DWT and blocking SVD. Furthermore the watermark is embedded into the U matrix with blocking SVD performed according to the route of knight＇ s tour. Watermarking could be extracted without the original video. Experimental results demonstrate the invisibility and robustness of the algorithm.

关 键 词：版权保护 视频水印 视觉特性 骑士巡游 离散小波变换(DWT) 奇异值分解(SVD) 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]