基于24位BMP图像的抗RQP检测LSB算法  

LSB steganography algorithm for anti RQP detection in 24-bit BMP images

作　　者：杨智超[1] 张亚平[1] 

机构地区：[1]天津大学软件学院,天津300072

出　　处：《计算机工程与设计》2015年第7期1716-1719,1783,共5页Computer Engineering and Design

基　　金：国家自然科学基金项目(61202165);天津市应用基础与前沿技术研究计划重点基金项目(09JCZDJC16800)

摘　　要：针对24位BMP彩色图像RQP算法,提出一种改进的LSB隐写算法。在隐秘过程中将载体图像的像素按颜色值分为若干集合,将每个集合的所有像素作为统一整体进行信息隐藏。其核心思想是通过减小隐秘图像中单一颜色数和相邻颜色对数的相对变化,实现对RQP隐写分析算法的抵抗能力。实验选取120幅24位BMP彩色图片作为载体进行信息隐藏,分析结果表明,该算法在保证一定隐藏容量的基础上,对RQP隐写分析有较强的抵抗能力和视觉隐藏效果。To embed messages in 24-bit color images and resist the powerful RQP analysis method,a LSB（least significant bit）steganography was put forward.All the pixels of the carrier image were divided into a plurality of sets that were treated as a whole according to its color value during the embedding processes.Experimental results based on 120 cover images show that the presented LSB algorithm realizes the resistance against RQP steganalysis by reducing the relative changes of unique color and close color pairs while achieving adequate embedding capacity without raising any suspicion about the existence of the secret information.

关 键 词：信息隐藏 隐写分析 相邻颜色对 最不重要位隐藏算法 RQP算法 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]