基于编码压缩和加密的图像可逆信息隐藏算法  

Reversible data hiding algorithm for images based on encoding compression and encryption

作　　者：俞春强 侯晓杰[3] 张显全 唐振军 陈艳[1,2] 邓方舟[4] YU Chun-qiang;HOU Xiao-jie;ZHANG Xian-quan;TANG Zhen-jun;CHEN Yan;DENG Fang-zhou(Network Information Center,Guangxi Normal University,Guilin 541004,China;Gnangxi Key Lab of Multi-source Information Mining ~ Security,Guangxi Normal University,Guilin 541004,China;Guangxi Colleges and Universities Key Laboratory of Cloud Computing and Complex systems,Guilin University of Electronic Technolo-gy,Guilin 541004,China;Network and Educational Technology Center,Guilin Normal College,Guilin 541000,China)

机构地区：[1]广西师范大学网络信息中心,广西桂林541004 [2]桂林电子科技大学广西高校云计算与复杂系统重点实验室,广西桂林541004 [3]广西师范大学广西多源信息挖掘与安全重点实验室,广西桂林541004 [4]桂林师范高等专科学校网络与教育技术中心,广西桂林541000

出　　处：《光电子．激光》2018年第8期876-883,共8页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金(61762017;61363034;61562007;81701780);广西自然科学基金(2015GXNSFDA139040;2017GXNSFAA198222);教育部"春晖计划"合作科研项目(Z2015149);广西信息科学实验中心项目(20130204);广西教育厅高校科研项目(LX2014056;LX2014115;KY2015LX006);广西高校云计算与复杂系统重点实验室项目(15202);广西区域多源信息集成与智能处理协同创新中心项目资助项目

摘　　要：提出一种编码压缩和加密的图像可逆信息隐藏算法。计算载体像素预测值与其像素值的差值,对差值进行哈夫曼编码压缩,通过压缩数据和随机数据加密重构图像,得到载体数据。将哈夫曼编码的码表和秘密信息隐藏在载体数据中,实现信息隐藏。在载密数据中提取码表数据和秘密信息,对加密压缩数据进行解密,结合码表和预测方法恢复原始图像。实验结果表明,本文算法具有较大的隐藏容量,不仅能正确提取秘密信息,还能无损恢复原始图像。This paper proposes a reversible data hiding algorithm for images based on encoding compres- sion and encryptioru The errors between pixel values and their prediction values are first calculated, and then compressed with Huffman coding to obtain the compressed data and Huffman table. The com- pressed data and random data are encrypted to reconstruct an image for cover data. The Huffman table and secret information are embedded into the cover data so as to achieve data hiding. The Huffman table and secret information can be extracted from the stego data. The compressed data is decrypted, the Huff- man table and prediction method are combined for recovering the original image. The experimental re- sults demonstrate the proposed method has high capacity. It not only can extract secret data accurately, but also recovers the original image without error.

关 键 词：图像加密 编码压缩 可逆信息隐藏 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]