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。
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.
出处
《计算机工程》
CAS
CSCD
北大核心
2009年第10期142-144,共3页
Computer Engineering
关键词
文本水印
鲁棒性
水印容量
text watermark
robustness
watermark capacity
