%0 Journal Article
%T Motion Vector Based Video Watermarking Scheme Against Geometric Attacks<br>基于运动矢量的抗几何攻击视频水印方案
%A DAI Kan-fei
%A CHEN Zhen-yong
%A TANG Long
%A <br>戴侃斐
%A 陈真勇
%A 唐龙
%J 中国图象图形学报
%D 2007
%I 
%X For many digital image and video watermarks,geometric distortions are one of the weaknesses.Even slight rotation,scaling and translation can destroy the synchronization and invalidate the detection of blind watermarks.In this paper,we present a novel video watermarking scheme that inserts a watermark intrinsically resistant to these distortions by exploiting the characteristics of the motion vector.We find that the relative relationship between characteristics of the motion vector cannot be altered with the geometric distortions easily.So the position and direction of watermark are determined according to the average values of the magnitude and direction of motion vectors.In addition,another advantage of the novel watermarking scheme is that the original video is not needed in watermark detection process.Experimental results show that the scheme is rather robust to the common geometric distortions including rotation,scaling and cutting.
%K video watermarking
%K motion vector
%K geometric attack<br>视频水印
%K 运动矢量
%K 几何攻击
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D06194629680C940ACE75262F54B9D85&aid=CB6AAAACF4D8572E&yid=A732AF04DDA03BB3&vid=59906B3B2830C2C5&iid=9CF7A0430CBB2DFD&sid=BFDA25D5ECAB4246&eid=5A16362B1718D389&journal_id=1006-8961&journal_name=中国图象图形学报&referenced_num=0&reference_num=8