数字图像信息隐藏预处理技术研究  

Digital Image Information Hiding Preprocessing Technology

作　　者：廖琪男[1] 

机构地区：[1]广西财经学院,广西南宁530003

出　　处：《计算机安全》2010年第5期38-40,共3页Network & Computer Security

摘　　要：多图像信息合并和图像信息加密是图像信息隐藏或图像信息传输的预处理重要环节。首先,提出基于图像逐行扫描算法的思想和基于图像位平面特性的两种多图像合并与恢复算法;然后,提出基于混沌序列的像素位置置乱加密和基于异或运算的像素值变换加密的双重加密算法。理论分析和实验结果表明,这些算法实现简单、有效可行、安全性好。Multi-image blending and image encryption is an important link of the Image Information Hiding or Image transmission in pretreatment.At first,this paper proposes two kinds of multi-image blending and extracting algorithm based on the idea of arithmetic of line scan and image Bit-plane properties.Then,it proposes a universal digital image dual scrambling and encryption algorithm,which realizes the image＇s pixel position scrambling based on Chaos sequence and the pixel value scrambling through XOR operation.Theoretical analysis and experimental results show that the algorithm is easy to realize,effective and secure.

关 键 词：信息隐藏 多图像合并 图像加密 混沌序列 自定义加密函数 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]