基于分块的JPEG图像信息隐藏算法

广西师范大学学报（自然科学版） ›› 2012, Vol. 30 ›› Issue (3): 119-124.

基于分块的JPEG图像信息隐藏算法

张显全^1,2, 王现会¹, 王晓云³, 俞春强¹

1.广西师范大学计算机科学与信息工程学院,广西桂林541004;
2.广西师范大学网络中心,广西桂林541004;
3.长江师范学院数学与计算机学院,重庆408100

收稿日期:2012-05-22 出版日期:2012-09-20 发布日期:2018-12-04
通讯作者: 张显全(1964—),男,重庆秀山人,广西师范大学教授。E-mail:zxq6622@163.com
作者简介:张显全,男,1964年1月出生,重庆秀山人,广西师范大学教授,硕士研究生导师。
基金资助:
国家自然科学基金资助项目(60963008);广西自然科学基金资助项目(2011GXNSFD018026,0832104,2012GXNSFBA053166);广西科学研究与技术开发计划项目(10123005-8);重庆市教委科技项目(KJ121310);涪陵区科技计划项目(FLKJ,2012ABA1056);广西教育厅项目(200911MS55)

Information Hiding Algorithm for JPEG Images Based on Block

ZHANG Xian-quan^1,2, WANG Xian-hui¹, WANG Xiao-yun³, YUChun-qiang¹

1.College of Computer Science and Information Technology,Guangxi Normal University,Guilin Guangxi 541004, China;
2.Network Center,Guangxi Normal University,Guilin Guangxi 541004,China;
3.College of Mathematics and Computer Science,Yangtze Normal University,Chongqing 408100,China

Received:2012-05-22 Online:2012-09-20 Published:2018-12-04

摘要/Abstract

摘要： 本文将图像进行分块,根据每块图像量化后的DCT系数矩阵,结合视觉特性将图像块分为不同的类型;然后对不同类型的块采用不同的方法在AC系数中嵌入秘密信息,减少对载体图像的影响,隐藏信息后载体图像块的类型不变,从而可正确提取隐藏信息。实验结果表明,该算法在保持JPEG图像视觉质量的同时有较高信息隐藏容量。

关键词: 信息隐藏, JPEG图像, DCT系数, 分块

Abstract: The cover image is firstly divided into non-overlapping blocks,whichare then classified into different categories according to quantized DCT coefficients of each block and the characteristics of Human Visual System.Different methods are adopted to hide the secret data in AC coefficients for different typesof blocks in order to reduce the influence on the cover image.The types of imageblock remain unchanged after secret is hidden in these blocks,thereby the secretdata can be extracted exactly.Experimental results show that the proposed algorithm can not only maintain visual quality of JPEG image but also achieve high capacity.

Key words: information hiding, JPEG, DCT coefficients, block

中图分类号:

TN919.81

张显全, 王现会, 王晓云, 俞春强. 基于分块的JPEG图像信息隐藏算法[J]. 广西师范大学学报（自然科学版）, 2012, 30(3): 119-124.

ZHANG Xian-quan, WANG Xian-hui, WANG Xiao-yun, YUChun-qiang. Information Hiding Algorithm for JPEG Images Based on Block[J]. Journal of Guangxi Normal University(Natural Science Edition), 2012, 30(3): 119-124.

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