Novel Text Watermarking Algorithm Based on Chinese Characters Structure

Chinese text documents can be watermarked by analyzing and patterning the characters¿ structure. This paper proposes a new natural text watermarking algorithm, which makes full use of the pictographic characters of the two-dimensional and the people¿s visual redundancy. In the algorithm, some Chinese characters can be split into two characters according the watermarking content, thereby increasing the text watermarking capacity, and by adjusting the characters¿ inter-space and displaying, we can enhance the text watermark¿s imperceptibility. For performance evaluation, we implement the algorithm to make experiments on different kinds of data sets. The results show that our watermarking method owns the following advantages: stronger watermarking robustness, greater watermarking capacity and better watermarking imperceptibility.