一种基于整数DCT系数调制及N维魔方矩阵的H.264/AVC信息隐藏方法  

A H.264 /AVC Information Hiding Algorithm Based on Integer DCT Coefficients Modulation and N-dimensional Magic Matrix

作　　者：李松斌[1,2] 付江云[1] 刘鹏[1,2] 戴琼兴[1] 邓浩江 

机构地区：[1]中国科学院声学研究所南海研究站,海口570105 [2]国家网络新媒体工程技术研究中心,北京100190

出　　处：《小型微型计算机系统》2013年第10期2293-2297,共5页Journal of Chinese Computer Systems

基　　金：国家自然科学基金项目(61303249)资助;国家"八六三"高技术研究发展计划项目(2011AA01A102)资助;中科院战略性先导科技专项(XDA06010302)资助

摘　　要：针对H.264/AVC视频编码标准提出了一种基于整数DCT系数调制及N维魔方矩阵的信息隐藏方法,该方法通过构造N维魔方矩阵,最多仅需修改N个整数DCT系数中的一个即可实现一位2N+1进制数的嵌入.实验表明,当N取3时,本文提出的方法在嵌入效率方面比现有方法提高了180%,同时在视频质量和码率方面本文方法有较大优势;并且,随着N的增大上述优势也趋于增强.This paper proposed a information hiding method which was based on integer DCT coefficient matrix modulation and N-di- mensional cube according to H. 264/AVC video coding standard, the method constructed a N-dimensional cube matrix, then the em- bedded integer DCTs were corresponded to the N-dimensional cube to establish a mapping matrix, through changing the N coefficients of a factor to make the adjacent map values to be equaled with 2N ＋ 1 decimal equivalent private information to achieve private infor- mation embedding. Experimental results showed that, when N fetched 3, the proposed method is more efficient than previous method improves by 180%, the PSNR and coding rate is better than the previous method, and with the increase of the N, this advantage was more obviously.

关 键 词：信息隐藏 N维魔方矩阵 嵌入效率 H.264/AVC 整数DCT系数 

分 类 号：TP309.02[自动化与计算机技术—计算机系统结构]