%0 Journal Article
%T Digital Image Watermarking Based on U-System<br>基于U系统的数字图象水印技术
%A DING Wei
%A YAN Wei qi
%A QI Dong xu
%A <br>丁玮
%A 闫伟齐
%J 中国图象图形学报
%D 2001
%I 
%X This paper present a novel easy and effective algorithm to plant digital watermark into digital images, this algorithm is different to general watermarking methods based on spread spectrum, because a new orthogonal base based on piecewise polynomial is constructed. The watermark based on this algorithm can resist energy loss caused by lose compression of digital image. In the first part of this pper, piecewise linear U system and its properties will be introduced respectively, corresponding graphs are shown, too. Following this part, how to generalize this algorithm to piecewise k degree U system is discussed; In the third part fo this paper, based on decompose digital image by piecewise linear U system, a kind of digital image watermarking scheme will be provided, the process of this algorithm is introduced step by step. By the end of this paper, some corresponding experimental results based on U system will be listed. The experimental results demonstrate the algorithm is reliable.
%K U
%K System
%K Digital image watermarking
%K Image information hiding<br>U系统
%K 数字图象水印
%K 图象信息隐藏
%K 植入方法
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D06194629680C940ACE75262F54B9D85&aid=C3E906F6BD6FFF23&yid=14E7EF987E4155E6&vid=B31275AF3241DB2D&iid=B31275AF3241DB2D&sid=385E3C2062167B88&eid=2E15A588990CC690&journal_id=1006-8961&journal_name=中国图象图形学报&referenced_num=2&reference_num=9