%0 Journal Article
%T Geometric Attack Resistant Image Watermarking in Spatial Domain<br>抗几何攻击的空间域图像数字水印算法
%A LI Xu-Dong
%A <br>李旭东
%J 自动化学报
%D 2008
%I 
%X Most existing watermarking algorithms cannot re- sist geometric attacks,while most geometric attack resistant wa- termarking algorithms can resist only some degree of geometric attacks.This paper proposed a novel geometric attack resistant image-watermarking algorithm.In the algorithm,for watermark embedding,the original image was divided into sub-images,and then one bit of the watermark information was embedded into each sub-image repeatedly by quantization.For watermark ex- tracting,the watermarked image was divided into sub-images, and then one bit of the watermark information of each sub- image was obtained by majority rule from watermark informa- tion extracted from the sub-image.The algorithm is simple and executs rapidly.The quantity of embedded watermark informa- tion is large and the original image is not needed for watermark extracting.Experimental results show that the algorithm can very effectively resist large degree of geometric attacks and com- pound attacks,and it is also strongly robust against common image processing attacks.
%K Digital watermarking
%K geometric attack
%K copyright protection<br>数字水印
%K 几何攻击
%K 版权保护
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=E76622685B64B2AA896A7F777B64EB3A&aid=85919E71FB1F831D8E610D246DAF9002&yid=67289AFF6305E306&vid=339D79302DF62549&iid=DF92D298D3FF1E6E&sid=AB1DE136C335A86C&eid=2C8B50BA95995EA2&journal_id=0254-4156&journal_name=自动化学报&referenced_num=6&reference_num=16