H.264视频完整性认证的水印算法  

Watermarking Algorithm for the Integrity Authentication of H. 264 Video

作　　者：李倩[1] 王让定[1] 

机构地区：[1]宁波大学信息科学与工程学院,浙江宁波315211

出　　处：《微电子学与计算机》2012年第9期189-192,共4页Microelectronics & Computer

基　　金：国家自然科学基金项目(61170137);国家教育部博士点基金(20103305110002);浙江省自然科学基金项目(Z1090622);浙江省大学生科技创新基金(2011R405057)

摘　　要：提出一种适用于H.264压缩标准的视频完整性认证水印算法,通过对运动矢量残差MVD分量进行调制嵌入水印.考虑到视频的运动性,将水印嵌入到绝对值较大的残差分量中,并且在调制过程中限制对宏块的选择条件,从而降低水印嵌入对视频质量的影响.实验结果表明,本算法能够对视频是否遭受篡改,即视频内容的完整与否进行认证,并且水印嵌入后对视频质量和码率仅有微弱的影响.An integrity authentication watermarking for H. 264 video compression standard is proposed. Watermark information embedded in the video frame by modulating the component of the residual motion vector. In order to reduce the impact of video quality after watermarking, the selection criteria for the macroblock was restrained. Furthermore, taking into account the movement of the video, the watermark is embedded into the larger absolute value of the residual component. Experimental results show that the algorithm brings very small bit-rate changes and video distortion, and can be subiected to tampering with the video, authentication the integrity of the video content.

关 键 词：H.264 视频水印 完整性认证 运动矢量残差 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]