基于频段选择的JPEG图像可逆信息隐藏

doi:10.3969/j.issn.0255-8297.2018.02.001

应用科学学报 ›› 2018, Vol. 36 ›› Issue (2): 209-219.doi: 10.3969/j.issn.0255-8297.2018.02.001

基于频段选择的JPEG图像可逆信息隐藏

黄丹^1,2, 程思锦², 黄方军^2,3

1. 中山大学电子与信息工程学院, 广州 510006;
2. 中山大学数据科学与计算机学院, 广州 510006;
3. 中国科学院信息工程研究所信息安全国家重点实验室, 北京 100093

收稿日期:2018-01-31 出版日期:2018-03-31 发布日期:2018-03-31
通信作者: 黄方军,副教授,研究方向:信息隐藏,E-mail:huangfj@mail.sysu.edu.cn E-mail:huangfj@mail.sysu.edu.cn
基金资助:
国家自然科学基金（No.61772572）；广东省自然科学基金（No.2017A030313366）；高校基本科研业务费基金（No.17lgjc45）资助

Reversible Data Hiding Based on Frequency Selection in JPEG Images

HUANG Dan^1,2, CHENG Si-jin², HUANG Fang-jun^2,3

1. School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510006, China;
2. School of Data and Computer Science, Sun Yat-sen University, Guangzhou 510006, China;
3. State Key Laboratory of Information Security, Institute of Information Engineering, Chinese Academy of Sciences, Beijing 100093, China

Received:2018-01-31 Online:2018-03-31 Published:2018-03-31

摘要/Abstract

摘要：

通过研究分析联合图像专家小组（joint photographic experts group，JPEG）图像离散余弦变换（discrete Cosine transform，DCT）系数的编码方式以及各频段DCT系数分布与其编码尺寸间的关系，发现利用中高频段DCT系数进行可逆信息隐藏对图像编码效率的影响更小.为此，考虑将JPEG图像DCT系数按频段组合，使相邻子块同一频段区间的DCT系数构成一组系数集合，并优先选择0系数较多的集合以嵌入信息.实验结果证明，所提出的基于频段选择的JPEG图像可逆信息隐藏算法能够大大降低因信息嵌入而引起的图像存储空间的增加，同时还能较好地保持图像视觉质量.

关键词: 可逆信息隐藏, JPEG图像, 频段选择, 图像存储尺寸

Abstract:

In this paper, by studying the encoding method of the discrete cosine transform (DCT) coefcients of joint photographic experts group (JPEG) image, and analyzing the relationship between the statistical properties of the DCT coefcients and coding length, we fnd that hiding data into DCT coefcients belonging to the mid-and-high frequency bands will lead to less fle size increment. Therefore, we propose a novel reversible data hiding (RDH) method based on the frequency selection strategy, in which the DCT coefcients of cover image are classifed into different groups based on their frequency bands, and the DCT coefcients of adjacent blocks belonging to the same frequency band are classifed into the same group. Thereafter, those groups with more zero coefcients are chosen preferentially for reversible data hiding. Experimental results demonstrate that the proposed RDH method can not only lessen the fle size increase introduced by data hiding greatly, but also perverse the image visual quality well.

Key words: image fle size, JPEG images, frequency selection, reversible data hiding

中图分类号:

TN911.73

黄丹, 程思锦, 黄方军. 基于频段选择的JPEG图像可逆信息隐藏[J]. 应用科学学报, 2018, 36(2): 209-219.

HUANG Dan, CHENG Si-jin, HUANG Fang-jun. Reversible Data Hiding Based on Frequency Selection in JPEG Images[J]. Journal of Applied Sciences, 2018, 36(2): 209-219.

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基于频段选择的JPEG图像可逆信息隐藏

Reversible Data Hiding Based on Frequency Selection in JPEG Images

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