%0 Journal Article
%T Watermarking algorithm resist local nonlinear geometric attacks based on reference points extraction<br>基于形殊点抗局部非线性几何攻击水印算法*
%A ZHANG Guang hui
%A ZHANG Guang lu
%A <br>张光会
%A 张广路
%J 计算机应用研究
%D 2012
%I 
%X In order to improve the robustness of watermark algorithm resist nonlinear geometric attacks,this paper proposed an image watermark algorithm based on reference points extraction(RPE).This approach extracted the picture edge by Canny firstly.Second,blocked the picture edge and calculated the RPE coordinates of block image.Finally,obtained the copyright information by calculating user keys and the watermark.The results obtained from performance analysis show that the algorithm can reduce the computational complexity in a large scale,it’s sensitive to user keys and robust to nonlinear geometric attacks.
%K information hiding
%K reference points extraction(RPE)
%K nonlinear geometric attacks
%K digital watermarking
%K user keys<br>信息隐藏
%K 形殊点
%K 非线性几何攻击
%K 数字水印
%K 用户密钥
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=A9D9BE08CDC44144BE8B5685705D3AED&aid=B42EDD6608FE925A93A344EAC1D2657D&yid=99E9153A83D4CB11&vid=771469D9D58C34FF&iid=0B39A22176CE99FB&sid=8DDBA6455F2E3ECF&eid=46FF101E7ECF9F15&journal_id=1001-3695&journal_name=计算机应用研究&referenced_num=0&reference_num=11