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一种新的文本数字水印标记策略和检测方法
引用本文:黄华,齐春,李俊,朱伟芳.一种新的文本数字水印标记策略和检测方法[J].西安交通大学学报,2002,36(2):165-168,181.
作者姓名:黄华  齐春  李俊  朱伟芳
作者单位:西安交通大学图像处理研究所,西安,710049
基金项目:陕西省自然科学基础研究计划资助项目(2 0 0 0X0 7)
摘    要:根据汉字文本的特点,对基于空间域的行移标记策略和质心检测方法进行了改进和简化,提出了一种新的行移标记策略和相应的质心检测方法。新的标记策略不使用参照行,从而可以提供2倍于原方法的标记空间;对质心噪声模型进行了放大处理,从而简化了检测方法,大大降低了计算量。新方法只需要检测每行的质心相对距离,从而实现了盲检。实验结果表明,新方法的判断准确率达95%以上。

关 键 词:数字水印  文本图像  图像处理  二值图像  行移标记策略  质心检测  质心相对距离
文章编号:0253-987X(2002)02-0165-04

New Watermarking Scheme and Centroid Detecting Method for Text Documents
Huang Hua,Qi Chun,Li Jun,Zhu Weifang.New Watermarking Scheme and Centroid Detecting Method for Text Documents[J].Journal of Xi'an Jiaotong University,2002,36(2):165-168,181.
Authors:Huang Hua  Qi Chun  Li Jun  Zhu Weifang
Abstract:Considering the feature of Chinese text, the marking scheme of line shifting and the centroid detecting method which are all based on space domain are improved and simplified, and a new marking scheme and relevant centroid detecting method are given. The new marking scheme can offer two times marking spaces than the old one does, because the new scheme gives up the use of control lines. The centroid noise model is magnified and the detection method is simplified, so the computation load is greatly reduced. The new scheme only needs to detect the relative distances of each line's centroid, in this way, it can realize blind detection. Experimental results show that the accuracy of improved method can achieve over 95%.
Keywords:watermarking  image of text documents  image processing  binary image
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