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计算机工程 ›› 2009, Vol. 35 ›› Issue (10): 142-144. doi: 10.3969/j.issn.1000-3428.2009.10.046

• 安全技术 • 上一篇    下一篇

基于汉字拼音声调的文本水印算法

赵 理1,2,崔杜武1   

  1. (1. 西安理工大学计算机科学与工程学院,西安 710048;2. 石家庄职业技术学院计算机系,石家庄 050081)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-05-20 发布日期:2009-05-20

Text Watermark Algorithm Based on Tone of Chinese Characters

ZHAO Li1,2, CUI Du-wu1   

  1. (1. School of Computer Science and Engineering, Xi’an University of Technology, Xi’an 710048; 2. Department of Computer, Shijiazhuang Vocational Technology Institute, Shijiazhuang 050081)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-05-20 Published:2009-05-20

摘要: 提出一种基于汉字拼音声调的中文文本水印算法。该算法基于统计特征来动态确定嵌入标志代码。在由标志代码确定的水印插入区,通过改变汉字集合声调的特征值来嵌入文本水印。该方法的水印容量由标志代码的数量动态确定,可自主地提高水印容量。整篇文档可以分割成若干个嵌入部分,各部分可单独进行插入、提取计算,降低了计算的复杂性。

关键词: 文本水印, 鲁棒性, 水印容量

Abstract: A text watermark algorithm based on the tone of Chinese characters is proposed. The text watermark, with the modification of the characters value by transformations, can be embedded into the area by the marked codes. The marked codes are decided by the characteristic of the document. The watermark capacity decided by the amount of marked codes can be changed freely. The whole article can be divided into many parts, the embedding and extraction of the text watermark can be done independently in each. The complexity can be reduced in this way.

Key words: text watermark, robustness, watermark capacity

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