基于块间关系的鲁棒视频水印算法设计  

Design of Robust Video Watermark Algorithm Based on the Relationship Between Blocks

作　　者：邱志宏[1] 

机构地区：[1]柳州职业技术学院信息工程系,广西柳州545006

出　　处：《河池学院学报》2011年第5期72-77,共6页Journal of Hechi University

基　　金：广西教育厅科研基金资助项目(200911LX490;201106LX754)

摘　　要：为了提高视频文件中水印算法的透明性和鲁棒性,在此提出了一种基于数据块间关系的水印嵌入算法,该方法以数据块之间的特定关系表示水印的比特值,从而避免了将水印值直观地嵌入原始的视频文件中。在介绍该水印算法的详细设计过程后,给出了水印的嵌入过程和提取过程,最后对设计的水印算法进行了透明性和鲁棒性的测试,测试结果表明该算法在高比特率的情况下具有较高的透明性。对于大部分常见的水印攻击方法具有较强的鲁棒性,但对于降低视频图像分辨率的攻击方法,水印的鲁棒性还有待提高。In order to enhance the transparency and robustness of watermark algorithm in video,this paper presents one kind of watermark inserting algorithm which is based on the block data relationship,which expresses the watermark particular value by the block data relationship,thus avoiding inserting intuitively the watermark value in the primitive video.Then it introduces the detailed design process of this watermark algorithm,and describes the watermark embedding and retrieval process.Finally,the test on watermark algorithm of the design is carried on,including the transparency test and the robust test, the test result indicates that this algorithm has the high transparency in the situation of high bit rate,and it has the strong robustness regarding the majority of common methods of watermark attack,but as to the attack methods for reducing the video image resolution,watermark robustness still needs enhancing.

关 键 词：水印算法 视频 块间关系 透明性 鲁棒性 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]