%0 Journal Article
%T A Security Multipurpose Image Watermarking System Model and Algorithm<br>一种安全多功能图像水印系统模型与算法
%A ZHU Cong-xu
%A CHEN Zhi-gang
%A <br>朱从旭
%A 陈志刚
%J 中国图象图形学报
%D 2008
%I 
%X To develop a security multipurpose image watermarking system,we use the 3D unified chaotic system sequences Y and Z to generate embedding coefficients of visible watermarks, and embed the visible watermarks in the image spatial domain to achieve the goal of copyright notification. Then we embed the first invisible watermarks in the image with embedded visible watermarks to obtain the aim of copyright protection. After removing the visible watermarks, the second invisible watermarks are embedded in the image to obtain the aim of unauthorized copy tracing. Two kinds of invisible watermarks' embedding positions are selected randomly by unified chaotic system sequences X and Y, based on a novel dual parameters quantization technique. Both watermarks that can be blindly extracted are embedded in the lifting wavelet transform (LWT) domain of those selected bocks. Simulation results show that the visible watermarks can be removed entirely by authorized users and can hardly be removed by unauthorized users. The impact of the invisible watermarks on the image quality is slight, and the invisible watermarks are robust to common image processing operations.
%K watermarking model
%K lifting wavelet
%K unified chaotic system
%K visible watermark
%K invisible watermark<br>水印模型
%K 提升小波变换
%K 统一混沌系统
%K 可见水印
%K 不可见水印
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D06194629680C940ACE75262F54B9D85&aid=34FF95A4CDC3D072D58CE3F6AB455C34&yid=67289AFF6305E306&vid=FC0714F8D2EB605D&iid=94C357A881DFC066&sid=117143DBED3B4430&eid=7E7F5B01D43BD73F&journal_id=1006-8961&journal_name=中国图象图形学报&referenced_num=0&reference_num=6