可逆文本水印算法研究

摘要

This paper presents a reversible text watermarking algorithm. By analyzing the feature of the text, text sentence sets are acquired to embed watermark information. According to parity of sentences and the evaluation model of synonymy substitution, the watermark is imperceptibly embedded into the original text. Different robustness and imperceptibility requirements can be met by adjusting the parameters of the algorithm. Experimental results show that the method can improve the invisibility of watermarking and recover the cover data without any distortion after extracting the watermarking.%提出一种可逆文本水印算法.该算法对文本特征进行分析,以确定待嵌入文本句子集,根据文本句子的奇偶性,利用同义词替换评价模型将水印不可感知地嵌入到原始文本中,通过调整算法参数,满足不同的鲁棒性和不可见性需求.仿真实验结果表明,该算法具有较好的不可见性,并能在提取水印后无损地恢复原始文本载体数据.