Effective reversible data hiding in encrypted image with privacy protection for image content

被引:166
作者
Qin, Chuan [1 ,2 ]
Zhang, Xinpeng [3 ]
机构
[1] Univ Shanghai Sci & Technol, Shanghai Key Lab Modern Opt Syst, Shanghai 200093, Peoples R China
[2] Univ Shanghai Sci & Technol, Engn Res Ctr Opt Instrument & Syst, Minist Educ, Shanghai 200093, Peoples R China
[3] Shanghai Univ, Sch Commun & Informat Engn, Shanghai 200072, Peoples R China
基金
中国国家自然科学基金; 上海市自然科学基金;
关键词
Reversible data hiding; Privacy protection; Image encryption; Data embedding; Image decryption; Data extraction; Image recovery; lsophote direction; DIFFERENCE;
D O I
10.1016/j.jvcir.2015.06.009
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
In this paper, we propose a novel reversible data hiding scheme in encrypted image. The content owner encrypts the original image with the encryption key to achieve privacy protection for image content, and then, each block of the encrypted image is embedded with one secret bit by the data hider using the data-hiding key. Through the elaborate selection for partial pixels to be flipped, data hiding process only conducts slighter modifications to each block, which leads to significant improvement of visual quality for the decrypted image. The receiver can easily decrypt the marked, encrypted image using the encryption key, and then, through the data-hiding key and an adaptive evaluation function of smoothness characteristic along the isophote direction, secret data can be extracted from the decrypted image, and the original image can further be recovered successfully. Experimental results demonstrate the effectiveness of the proposed scheme. (C) 2015 Elsevier Inc. All rights reserved.
引用
收藏
页码:154 / 164
页数:11
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