ISSN 1000-1239 CN 11-1777/TP

Journal of Computer Research and Development ›› 2020, Vol. 57 ›› Issue (11): 2271-2282.doi: 10.7544/issn1000-1239.2020.20200434

Special Issue: 2020密码学与数据隐私保护研究专题

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Reversible Data Hiding in JPEG Images Based on Distortion-Extension Cost

Wang Yangyang1, He Hongjie1, Chen Fan1, Zhang Shanjun2   

  1. 1(Sichuan Key Laboratory of Signal and Information Processing (Southwest Jiaotong University),Chengdu 611756);2(Department of Information Science, Faculty of Science, Kanagawa University, Hiratsuka City, Kanagawa, Japan 2591293)
  • Online:2020-11-01
  • Supported by: 
    This work was supported by the National Natural Science Foundation of China (U1936113, 61872303).

Abstract: Considering the file size increase and visual distortion of the JPEG image with secret data, a reversible data hiding algorithm of JPEG images based on distortion-extension cost is proposed. Histogram shifting is used to realize reversible embedding of secret data, focusing on how to adaptively select embedding frequency and image block according to embedding capacity, so as to minimize the visual distortion and file size increase of JPEG image with secret data. This paper discusses and analyzes the rationality of determining the frequency embedding sequence by simulating the unit increase of file size of different frequencies, and determining the image block embedding sequence by the number of zero alternating current coefficients and smoothness of the image block. When embedding the data, the frequency of the smaller unit increase of file size and the smoother image block are preferred; and the unit increase of file size and the unit distortion-increase ratio are defined as quantitative evaluation indicators of algorithm file expansion, the relationship of visual quality and file expansion, respectively. Experimental results demonstrate that compared with the latest similar algorithms, the proposed algorithm can achieve a better balance between the increase of file size of the JPEG image with secret data and the visual quality, and reduce the increase of file size of the JPEG image with secret data, and the average of unit increase of file size under the same embed capacity has been reduced by 0.15~0.25.

Key words: reversible data hiding, JPEG images, histogram shifting, file size increase, visual distortion

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