%0 Journal Article
%T Bi-watermarking algorithm for H.264/AVC low bit-rate video stream<br>基于H.264/AVC低比特率视频流的双水印算法
%A SHAN Cheng-gan
%A SUN De-hui
%A <br>单承赣
%A 孙德辉
%J 计算机应用
%D 2007
%I 
%X Noticing the new features of the H. 264/AVC video coding standard, through the research into the coding of the DCT coefficients of I-frames and the processing of the motion estimate of P-frames, a new bi-watermarking algorithm that can realize the copyright protection and the integrality authentication jointly was proposed. Simulation results show that the video stream has a good rate-dlstortion balance by using the coding control technique of Lagrangian optimization; the robust watermark embedded has good immunity to some attacks such as requantization, frames-editing and so on, and the fragile watermark embedded is very sensitive to various common attacks. This algorithm need not decode to the video bit stream entirely, and it realizes the blind detection of bi-watermarking, which can achieve the requirement of the random detection in real-time.
%K H
%K 264/AVC
%K bit stream
%K robust watermark
%K fragile watermark
%K quzatization
%K motion vector<br>H.264/AVC
%K 比特流
%K 鲁棒水印
%K 脆弱水印
%K 量化
%K 运动矢量
%K 低比特率
%K 视频流
%K 水印算法
%K algorithm
%K stream
%K 随机检测
%K 盲提取
%K 解码
%K 完全
%K 压缩码流
%K 提取水印
%K 敏感性
%K 脆弱水印
%K 抵抗性
%K 编辑
%K 鲁棒水印
%K 平衡
%K 率失真
%K 比特流
%K 控制技术
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=831E194C147C78FAAFCC50BC7ADD1732&aid=14E16CBD27430512B69E89C3A20BBA1D&yid=A732AF04DDA03BB3&vid=DB817633AA4F79B9&iid=5D311CA918CA9A03&sid=CC5F4A47280A3584&eid=0F2A4352C5EAE78D&journal_id=1001-9081&journal_name=计算机应用&referenced_num=0&reference_num=14