一种基于纠错编码的可逆文本水印算法  

A REVERSIBLE TEXT WATERMARKING ALGORITHM BASED ON ERROR CORRECTION CODING

作　　者：林新建[1] 唐向宏[1,2] 王静[1] 

机构地区：[1]杭州电子科技大学通信工程学院,浙江杭州310018 [2]杭州电子科技大学信息工程学院,浙江杭州310018

出　　处：《计算机应用与软件》2015年第1期303-308,共6页Computer Applications and Software

摘　　要：针对现有可逆文本水印抗同义词替换攻击鲁棒性不强的缺点,提出一种基于纠错编码的可逆文本水印算法。利用纠错编码方法,对同义词库中同义词的位置进行编码生成同义词词码字,结合同义词替换技术完成水印的嵌入;在提取水印时,利用纠错码的检测纠错功能完成水印的提取,同时实现同义词替换后可还原的可逆文本水印功能。仿真实验表明,算法嵌入的水印具有良好的不可见性和较强的鲁棒性。As the robustness of resisting synonymy substitution attacks is not strong enough in existing reversible text watermarking, we propose a reversible text watermarking algorithm which is based on error correction coding. It uses error correction coding method to encode the position of a synonym in its thesaurus so as to generate the codeword of the synonyms, and then completes the watermark embedding in combination with the synonymy substitution technology. When extracting the watermark, the algorithm uses the detection and error correction function of error correcting code to achieve the watermark extraction. At the same time it also realises the reversible text watermarking function in which the substituted synonym returns to its original status. Simulation experiments show that, the watermarks embedded by the algorithm has good imperceptibility and better robustness.

关 键 词：可逆文本水印 同义词替换 鲁棒性 纠错编码 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]