%0 Journal Article
%T Improvement on centroid detection method for text document watermarking<br>文本文档水印质心检测方法的改进
%A DAI Zu-xu
%A HONG Fan
%A LI Xiao-gang
%A DONG Jie
%A <br>戴祖旭
%A 洪帆
%A 李小刚
%A 董洁
%J 计算机应用
%D 2007
%I 
%X An improvement on centroid detection method invented by Brassil et al was presented.The improved method constructs a centroid series which were convergent in probability to centroid of initial text line using both initial profile and reproduced profile of text line.Experimental result shows that the new approach may half down the probability of detection error in the case of short text lines in comparison with the Brassil' method.The conclusion suggests that line-shift coding would not be subject to text line length again,either long lines or short lines are all used to embed watermark,and the watermark capacity is increased.
%K digital watermarking
%K image of text documents
%K line-shift coding
%K centroid detection
%K watermark capacity<br>数字水印
%K 文本图像
%K 行移编码
%K 质心检测
%K 水印容量
%K 文本行
%K 文档水印
%K 质心序列
%K 检测方法
%K 改进
%K watermarking
%K document
%K text
%K detection
%K method
%K centroid
%K 水印容量
%K 度限制
%K 嵌入水印
%K 行移编码
%K 误检概率
%K 处理含
%K 结果
%K 实验
%K 依概率收敛
%K 模拟扩展
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=831E194C147C78FAAFCC50BC7ADD1732&aid=CA5AF6423851DF814BFA56869CD37D4B&yid=A732AF04DDA03BB3&vid=DB817633AA4F79B9&iid=94C357A881DFC066&sid=941A3E905B9F2AD9&eid=63025EFC6CC49145&journal_id=1001-9081&journal_name=计算机应用&referenced_num=1&reference_num=4