中文摘要：

该文提出了一种基于遗传算法优化和汉字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,可自主的提高水印容量。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,极大的降低了计算的复杂性。

英文摘要：

A text watermarking algorithm based on the tone of Chinese characters and genetic algorithm is proposed. The text watermarking, with the modification of value of the characters by transformations, can be embedded into the area marked by the marked codes. The marked codes are decided by the characteristic of the document, and the watermarking capacity decided by the amount of marked codes can also be flexible. The whole article can be divided into many parts, with independent text watermarking embedded and extracted, which reduces the computation complexity significantly.