摘要
从汉字分类思维的角度,在充分利用汉字的二维象形性以及人眼视觉冗余特性的基础上,提出一种将结构化汉字字形拆分再重组的自然型文本水印算法。该算法通过汉字字形的拆分,增加了文档内容编码冗余,提高了水印信道容量,并通过调整汉字显示属性,增强水印的隐蔽性。最后对其进行实验验证,证明该算法兼具格式水印隐蔽性和语义水印鲁棒性的双重优点,并具有嵌入空间大的特点。
From the perspective of Chinese characters classification, this paper made full use of pictographic characters of the two-dimensional and the human visual characteristics of redundancy, and presented a novel natural text watermarking algorithm based on Chinese characters glyph rebuild. In the algorithm, spited the glyph of Chinese characters to two other＇s,, increasing the content of the document coding redundancy, enhancing the watermark capacity, and by adjusting the properties of charac- ters displaying, enhanced the watermarking imperceptibility. Finally, the experiment proves that the algorithm has both advantages of imperceptibility of format watermarking and robustness of the semantic watermarking, and has large capacity characteristics.
出处
《计算机应用研究》
CSCD
北大核心
2009年第4期1520-1522,1527,共4页
Application Research of Computers
基金
天津市软件产业发展专项资金计划资助项目(07FZRJGX01300)
关键词
汉字结构
自然型文本水印
格式水印
Chinese characters structure
natural text watermarking
format watermarking
