ISSN 1000-1239 CN 11-1777/TP

计算机研究与发展 ›› 2020, Vol. 57 ›› Issue (11): 2271-2282.doi: 10.7544/issn1000-1239.2020.20200434

所属专题: 2020密码学与数据隐私保护研究专题

• 信息安全 • 上一篇    下一篇

基于失真-扩展代价的JPEG图像可逆数据隐藏

王洋洋1,和红杰1,陈帆1,张善俊2   

  1. 1(信号与信息处理四川省重点实验室(西南交通大学) 成都 611756);2(神奈川大学理学部信息科学科 日本神奈川県平塚市 2591293) (wyy.wang@foxmail.com)
  • 出版日期: 2020-11-01
  • 基金资助: 
    国家自然科学基金项目(U1936113,61872303)

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).

摘要: 兼顾含密JPEG图像的文件增量和视觉失真,提出一种基于失真-扩展代价的JPEG图像可逆数据隐藏算法.采用直方图平移实现秘密数据的可逆嵌入,重点研究如何根据嵌入容量自适应选择嵌入频率和图像块,以最小化含密JPEG图像的视觉失真和文件增量.分析讨论了通过模拟计算数据嵌入不同频率的单位文件增量确定频率嵌入顺序、根据图像块零交流系数个数和平滑度确定图像块嵌入顺序的合理性,数据嵌入时优先选取较小单位文件增量的频率和较平滑图像块;并分别定义单位文件增量、单位失真-增长比作为算法文件扩展、视觉质量与文件扩展关系的定量评价指标.实验结果表明:与现有同类算法相比,所提的算法可更好地兼顾含密JPEG图像文件增量和视觉质量,降低含密JPEG图像文件增量,相同嵌入容量下单位文件增量平均值降低0.15~0.25.

关键词: 可逆信息隐藏, JPEG图像, 直方图平移, 文件增量, 视觉失真

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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