| 一种JPEG图像的DCT域隐写分析方法 |
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| 引用本文： | 倪晋宇,吴福宝,谢春辉.一种JPEG图像的DCT域隐写分析方法[J].微型机与应用,2011,30(8):39-41,44. |
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| 作者姓名： | 倪晋宇 吴福宝 谢春辉 |
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| 作者单位： | 中国科学技术大学电子科学与技术系计算机视觉实验室,安徽合肥,230027 |
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| 摘 要： | 提出了一种基于JPEG图像DCT系数差分矩阵统计特征的隐写分析方法。该算法保留了以往算法选用的DCT系数水平和竖直方向的差分矩阵相关特征,通过增加其主副对角线方向上差分矩阵来提取和计算特征向量,进而利用SVM分类器进行分类。实验结果表明,该方法能够有效地对JPEG图像进行检测,并且具有较高的检测正确率。
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| 关 键 词： | JPEG图像 隐写分析 差分矩阵 DCT系数 |
A steganalysis method in DCT domain for JPEG images |
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| Ni Jinyu,Wu Fubao,Xie Chunhui.A steganalysis method in DCT domain for JPEG images[J].Microcomputer & its Applications,2011,30(8):39-41,44. |
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| Authors: | Ni Jinyu Wu Fubao Xie Chunhui |
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| Affiliation: | Ni Jinyu,Wu Fubao,Xie Chunhui(Lab of Computer Vision,Department of Electronic Science and Technology,University of Science and Technology of China,Hefei 230027,China) |
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| Abstract: | In this paper,a steganalysis method based on statistical characteristics of the difference matrix in DCT domain is proposed to effectively detect JPEG steganography.This algorithm extracts and calculates feather vectors by the addition of the difference matrix of DCT coefficients in JPEG images which retains the use of horizontal and vertical directions relevant characteristics in the difference matrix of the DCT coefficients of the previous algorithm,and SVM is used to construct the classifiers.The experim... |
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| Keywords: | JPEG image steganalysis difference matrix DCT coefficients |
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