基于运动矢量统计的同步视频水印算法  

Video Watermarking Synchronization Based on Motion Vector Statistic

作　　者：张立和[1] 杨成[2] 孔祥维[1] 

机构地区：[1]大连理工大学电信学院,辽宁大连116023 [2]中国传媒大学信息工程学院,北京100024

出　　处：《光电子．激光》2007年第2期236-240,共5页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(60572111)

摘　　要：通过分析运动矢量的数据统计特性,提出一种基于统计的抗同步攻击视频水印算法。该算法水印信息表示空间与数据特性紧密联系,具有物理空间、时间不可划分性,克服了传统水印算法的检测器对水印同步的依赖性。实验表明,该算法具有很好的鲁棒性和不可感知性,能够抵抗帧删除等同步攻击以及基于视频内容的攻击;在帧删除率小于18%时,水印正确率大于80%。A novel video watermarking algorithm is proposed based on data statistical classification of motion vectors. In this algorithm, watermark information relates closely with data characteristic,it doean＇t have the physical partitionablity. Therefore, the algorithm avoids the sensitivity to watermark synchronization compared with traditional algorithms. The experimental results demonstrate the algorithm has great robustness and unperceptiveness and can efficiently against temporal synchronization attacks and content-based attacks. When lost frame ratio is lower than 18% ,watermark accuracy is higher than 80%.

关 键 词：运动矢量 同步攻击 视频水印 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]