一种可抵御RS统计分析的图像信息隐藏方案  

An image steganography scheme resisting RS statistical analysis

作　　者：罗向阳[1] 高山青[1] 刘镔[1] 刘粉林[1] 

机构地区：[1]解放军信息工程大学信息工程学院,郑州450002

出　　处：《控制与决策》2007年第4期423-427,435,共6页Control and Decision

基　　金：国家自然科学基金项目(60374004);河南省杰出青年基金项目(0412000200);河南省高校杰出科研人才创新工程项目(2001KYCX008);河南省科技攻关项目(0623021500)

摘　　要：通过动态补偿隐藏信息后的图像,给出一种可抵御RS分析的LSB隐藏方案.该方案基于混沌系统产生随机序列选择嵌入位置并进行LSB嵌入,对嵌入信息后的图像进行动态补偿,补偿后的图像即使信息嵌入率接近于100%,RS方法得到的估计值仍将低于判决阈值,从而作出错误判决.混沌系统初值和动态补偿参数可进一步提高系统的安全性.实验表明,该方案可有效抵抗经典RS方法及其多种改进方法的分析.Through dynamicaly compensating the pixel values of the LSB embedded image, a novel LSB steganography method is presented against RS analysis. This scheme embeds message in the LSB plane of the carrier image randomly via chaotic system, then makes a dynamic compensation on the steg-image. Even though the embedding ratio is near 100% in the steg-image, such dynamic compensation can make RS steganalysis get a estimate value, which is lower than the threshold and will causes an incorrect judgement. Moreover, the initial value of the chaotic system and the selection parameters of the compensation are used to improve the security of steganography system. Experimental results show that this approach also can resist some other improved RS steganalysis methods availably.

关 键 词：信息隐藏 LSB隐藏 RS分析 混沌系统 动态补偿 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]