%0 Journal Article
%T Geometric Attacks Resistant Image Watermarking in Affine Covariant Regions<br>基于仿射协变区域的抗几何攻击图像水印算法
%A DENG Cheng LI Jie GAO Xin-Bo School of Electronic Engineering
%A Xidian University
%A Xi an
%A <br>邓成
%A 李洁
%A 高新波
%J 自动化学报
%D 2010
%I 
%X A robust image watermarking in affine covariant regions is proposed. First, the affine-invariant point detector is used to extract feature points of a given host image. A set of stable and non-overlapped affine covariant regions are then chosen via selection criterion based on the minimum spanning tree clustering algorithm. Secondly, image normalization and dominant gradient orientation alignment are performed on these feature regions to achieve scaling and rotation invariance. Finally, watermarks are directly embedded in these feature regions. Extensive experimental results demonstrate that the proposed scheme is robust against common image processing operations, geometric attacks, and combined attacks.
%K Image watermarking
%K geometric attack
%K affine covariant region
%K image normalization
%K dominant gradient orientation<br>图像水印
%K 几何攻击
%K 仿射协变区域
%K 图像归一化
%K 主梯度方向
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=E76622685B64B2AA896A7F777B64EB3A&aid=B3285D970C68B96586A408E4AA319528&yid=140ECF96957D60B2&vid=933658645952ED9F&iid=0B39A22176CE99FB&sid=78F0EFE028BD3783&eid=CA5852BD1A173B3A&journal_id=0254-4156&journal_name=自动化学报&referenced_num=1&reference_num=0