Digital Watermarking Applied To MEPG-2 Coded Video Sequences Exploiting Motion Vector  

作　　者：DAIYuan-jun ZHANGLi-he YANGYi-xian 

机构地区：[1]Beijing University of Posts and Telecommtmications,Beijing100876,P.R.China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2004年第2期35-39,共5页中国邮电高校学报（英文版）

基　　金：Thisworkwassupportedbythe 973NationalBasicResearchProgramofChinaandtheNationalNaturalScienceFoundationofChina.underresearchgrantnumbers1 9990 3580 4and 90 2 0 4 0 1 7

摘　　要：This paper proposes a video watermarking technology to hide copyright information by a slight modification of the motion vector in MPEG-2 video bitstream. In this method, the watermark is embedded in the motion residual of the large value motion vector, then the motion residual is regularized into a modified bitstream, from which the watermark information can be retrieved easily and exactly. From the experimental results, this technology has the advantage of little influence on the MPEG decoding speed, degrading the perceptive effect little, and the capability to embed watermark in a short video sequence, and can be used to watermark directly on the compressed and uncompressed video sequence.This paper proposes a video watermarking technology to hide copyright information by a slight modification of the motion vector in MPEG-2 video bitstream. In this method, the watermark is embedded in the motion residual of the large value motion vector, then the motion residual is regularized into a modified bitstream, from which the watermark information can be retrieved easily and exactly. From the experimental results, this technology has the advantage of little influence on the MPEG decoding speed, degrading the perceptive effect little, and the capability to embed watermark in a short video sequence, and can be used to watermark directly on the compressed and uncompressed video sequence.

关 键 词：video watermark MPEG motion vector multimedia security 

分 类 号：TN919.81[电子电信—通信与信息系统]