静止图像的信息隐藏容量研究  

The Study on the Capacity of Information Hiding System on Still Images

作　　者：胡云[1] 钮心忻[1] 杨义先[1] 

机构地区：[1]北京邮电大学信息安全中心,北京100876

出　　处：《电子与信息学报》2004年第11期1681-1685,共5页Journal of Electronics & Information Technology

基　　金：国家重点基础研究发展规划项目(TG1999035804);北京市自然科学基金(4042022);教育部优秀青年教师资助计划项目资助课题

摘　　要：信息隐藏容量的计算和估计是信息伪装领域中的最困难问题之一。该文从编码和集合论的角度考察了离散情形下静止图像的信息隐藏容量的计算和性质,给出了相关的定义和计算方法,并给出了在无攻击者条件下静止图像的信息隐藏容量只与失真限制和图像数据源的概率分布有关的结论。进一步,还给出了有攻击者情形下的隐藏容量的相关结果。To evaluate and calculate the capacity of information hiding system is a crucial topic of the field. From the point of view of the coding theory and set theory, this paper suggest a methodology for calculating the capacity of information hiding system on still images in a discrete case, meantime, some definitions are given and a conclusion that the capacity in the condition of no attackers is only related to the distortion function and the PMF(Probability Mass Function) of the source data is drawn out. Furthermore, the results of the capacity of information hiding in the case with attackers are given also.

关 键 词：信息隐藏 隐藏容量 编码论 集合论 失真函数 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]