基于位平面无损压缩的密文域可逆信息隐藏  

Reversible information hiding of encrypted domain based on bit-plane lossless compression

作　　者：刘宇 杨百龙 赵文强 袁志华 Liu Yu;Yang Bailong;Zhao Wenqiang;Yuan Zhihua(Dept.of Combat Support,Rocket Force Sergeant School,Qingzhou Shandong 262500,China;Dept.of Information Engineering,Rocket Force University of Engineering University,Xi’an 710025,China)

机构地区：[1]火箭军士官学校作战保障系,山东青州262500 [2]火箭军工程大学信息工程系,西安710025

出　　处：《计算机应用研究》2018年第9期2789-2792,共4页Application Research of Computers

摘　　要：针对密文域可逆信息隐藏算法中嵌入率不高、可逆性不强、鲁棒性差的问题,提出一种密文图像位平面无损压缩的可逆信息隐藏算法。介绍二进制数据位压缩编码方式,使用该方式将低位平面信息存储于压缩后的高位平面中;而后加密图像,采用比特替换的方式在低位平面嵌入秘密信息,最后按位重组图像。解密时接收方提取秘密信息和恢复图像的操作相互独立。实验证明,该算法具有较高的嵌入率,可逆恢复的载体图像质量较好,能够有效抵抗一定程度的噪声及数据丢失攻击。Focus on the problem that the embedding rate is insufficient,the reversibility is not strong and the robustness is poor,this paper proposed a reversible information hiding algorithm for bit-plane lossless compression of encrypted image.First it introduced the theory of binary data bit compression coding,stored the low level information in the compressed high plane by this way.And then encrypted the image,used the way of bit replacement in the low plane to embed secret information,and finally reconstructed the image bit by bit.When decrypting,the receiver extracted the secret information and restored the images independently of each other.Experiments show that the algorithm has high embedding rate,and the vector image of rever-sible recovery is better,and it can effectively resist a certain degree of noise and data loss attack.

关 键 词：无损压缩 嵌入率 密文域 可逆信息隐藏 

分 类 号：TP391[自动化与计算机技术—计算机应用技术] TP309.2[自动化与计算机技术—计算机科学与技术]