An improved algorithm for reversible data hiding in encrypted image

Authors:
Jie Yu;Guopu Zhu;Xiaolong Li;Jianquan Yang
Affiliations:
Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, GD, China;Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, GD, China;Institute of Computer Science and Technology, Peking University, Beijing, China;Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, GD, China
Venue:
IWDW'12 Proceedings of the 11th international conference on Digital Forensics and Watermaking
Year:
2012

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Abstract

Recently, Zhang [1] proposed a reversible data hiding algorithm for encrypted image, which can reversibly embed data into encrypted image without knowing the original image content. However, in data extraction of this algorithm, the error-rate is large especially for high capacity case. In this paper, to remedy the above problem, an improved method is presented. By our improvement, the error-rate is significantly decreased and the visual quality of the decrypted marked image is enhanced as well.