基于循环码的湿纸隐写码  

Wet-paper stego-coding based on cyclic-code

作　　者：张广斌[1] 岳云天[1] 张传富[1] 

机构地区：[1]信息工程大学,郑州450004

出　　处：《计算机应用研究》2013年第9期2805-2806,2809,共3页Application Research of Computers

摘　　要：为了提高隐写术的安全性和嵌入效率,避免湿纸码(wet paper code,WPC)的局限性,提出了基于循环码的湿纸编码方法(wet-paper stego-coding based on cyclic-code,WSC)。利用生成矩阵研究了一种新的陪集生成方法,根据校正子与陪集的映射关系提出了WSC码构造方法,最后结合图像自适应隐写给出了基于WSC码的隐写流程并分析了隐写码的性能。实验和分析表明,与WPC相比,WSC码具有更高的嵌入效率,在k≤16时WSC码具有较低的计算复杂度。In order to enhance the security and embedding efficiency and to avert the localization of WPC, this paper presented WSC. The scheme used the generator matrix to create coset, and presented WSC coding scheme based on the mapping of syn- drome and coset. At the last, with the image adaptive steganography, this paper provided the stego-flow based on WSC and an- alysed the capability of WSC. Experiment and analysis show that, compared to WPC, WSC has the higher embedding efficiency, and lower of compute complexity when k is less than or equal to 16.

关 键 词：隐写码 湿纸码 循环码 嵌入效率 自适应算法 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]