%0 Journal Article
%T Survey on Watermarking Against Geometric Attack<br>图像水印抗几何攻击研究综述
%A Liu Jiu-fen
%A Huang Da-ren
%A Huang Ji-wu
%A <br>刘九芬
%A 黄达人
%A 黄继武
%J 电子与信息学报
%D 2004
%I 
%X Robustness is the key issue of digital watermarking technology. Up to now, various watermarking algorithms are proposed with much emphasis on the "robustness". However, the "robustness" claimed in most of algorithms is only against common signal processing operations such as compression and signal filtering. It is now clear that even very small geometric distortions can prevent the detection of a watermark. In this paper the current methods against geometric attacks are analyzed and summarized, and some probable development directions of digital watermarking at next stage are introduced which are the key issues to improve and design watermarking algorithms.
%K Digital watermarking
%K Watermarking attack
%K Geometric attack<br>图像水印
%K 水印攻击
%K 几何攻击
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=71B62DD21B0D8D35&yid=D0E58B75BFD8E51C&vid=96C778EE049EE47D&iid=9CF7A0430CBB2DFD&sid=033F76C1E79F93E7&eid=D6ABCD9C81633DC2&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=33&reference_num=42