基于矢量字库的文本信息隐藏算法研究

从汉字分类思维的角度，在充分利用汉字的二雏象形性以及人眼视觉冗余特性的基础上，提出一种基于矢量汉字库的文本信息隐藏检测算法。该算法通过修改汉字字库的矢量数据来建立一个供发送方和接收方共同持有的小字库来实现信息隐藏，增加了文档内容编码冗余，提高了水印信道容量，增强了水印的隐蔽性。经实验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。

Text information hiding algorithm based on vector data font

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 proposed a text information hiding detection algorithm based on vector-based Chinese character.In the algorithm, by modifying the Chinese character of the vector data to create a sender and receiver for the co-owned small font to achieve information hiding,increased the content of the document coding redundancy, enhanced the watermark capacity, enhanced the water marking imperceptibility.Finally, the experimental result proves that the algorithm has both advantages of imperceptibility of format watermarking and robustness of the semantic watermarking, and has characteristic of large capacity.