基于预测误差位平面压缩的密文图像可逆信息隐藏  

Reversible data hiding in encrypted image based on bit-plane compression of prediction error

作　　者：吴友情 马文静 殷赵霞 彭银银 张新鹏 WU Youqing;MA Wenjing;YIN Zhaoxia;PENG Yinyin;ZHANG Xinpeng(School of Computer Science and Technology,Hefei Normal University,Hefei 230601,China;Anhui Provincial Key Laboratory of Multimodal Cognitive Computation,Anhui University,Hefei 230601,China;School of Communication&Electronic Engineering,East China Normal University,Shanghai 200241,China;School of Computer Science and Information Engineering,Hefei University of Technology,Hefei 230031,China;School of Computer Science,Fudan University,Shanghai 200433,China)

机构地区：[1]合肥师范学院计算机学院,安徽合肥230601 [2]安徽大学多模态认知计算安徽省重点实验室,安徽合肥230601 [3]华东师范大学通信与电子工程学院,上海200241 [4]合肥工业大学计算机与信息学院,安徽合肥230031 [5]复旦大学计算机科学与技术学院,上海200433

出　　处：《通信学报》2022年第8期219-230,共12页Journal on Communications

基　　金：国家自然科学基金资助项目(No.62172001,No.61872003,No.U1936214);安徽省高等学校自然科学重点资助项目(No.KJ2021A0901);多模态认知计算安徽省重点实验室(安徽大学)开放基金资助项目(No.MMC202106)。

摘　　要：为进一步提升密文图像可逆信息隐藏算法性能,提出预测误差位平面联合编码无损压缩算法,可更充分地利用图像冗余,以预留更多可嵌入空间。图像所有者首先计算图像的预测误差,将预测误差位平面划分为相同大小的非重叠块,接着将其按块进行重新排列,利用游程编码和哈夫曼编码压缩重排后的比特流以预留空间。信息隐藏者在加密图像的预留空间中嵌入信息。在接收端,合法接收者能无损并可分离地提取信息和恢复图像。实验结果表明,所提算法充分利用位平面分布特性,获得了高嵌入性能,在BOSSbase和BOWS-2图像集中平均嵌入率达到3.763 bpp和3.642 bpp,比同类算法至少提升0.081 bpp和0.058 bpp。To further improve the performance of reversible data hiding in encrypted image,an algorithm for lossless compression of the prediction error bit-plane using joint encoding was proposed,which could make full use of image re-dundancy and reserve more embedding room.Firstly,the image owner calculated the prediction error of the image and divided the prediction error bit-plane into non-overlapping blocks of the same size.Then,the prediction error bit-plane was rearranged according to blocks and the rearranged bitstream was compressed by run-length encoding and Huffman encoding to reserve room.The data hider embedded information in the reserved room of the encrypted image.At the re-ceiving end,the legitimate receiver extracted information and recovered images losslessly and separately.Experimental results show that the proposed algorithm makes full use of the bit-plane distribution characteristics and achieves higher embedding performance.The average embedding rates in BOSSbase and BOWS-2 datasets reach 3.763 bpp and 3.642 bpp,which are at least 0.081 bpp and 0.058 bpp higher than the state-of-the-art algorithms.

关 键 词：密文图像可逆信息隐藏 预测误差 游程编码 哈夫曼编码 位平面 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]