| 一种新的小波域高阶统计量图像隐写分析方法 |
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| 引用本文： | 张秋余,张燕,袁占亭.一种新的小波域高阶统计量图像隐写分析方法[J].兰州理工大学学报,2009,35(5). |
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| 作者姓名： | 张秋余 张燕 袁占亭 |
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| 作者单位： | 兰州理工大学,计算机与通信学院,甘肃,兰州,730050 |
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| 摘 要： | 在对现有盲检测算法分析研究改进的基础上,提出一种新的JPEG图像信息隐藏盲检测方法.该方法把JPEG图像的DCT系数分解到小波域,计算出各个子带小波系数的一系列高阶统计特征,组成72维特征向量,引入特征缩放技术将特征向量进行缩放,并用支持向量机进行分类.针对CorelDraw图像库4种常用的隐写方法进行实验,结果表明该方法在4种不同隐写方式下的平均检测正确率均达到91%(嵌入率为100%)以上.
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| 关 键 词： | 隐写分析 小波变换 高阶统计量 特征缩放 支持向量机 |
A new image steganalysis method for higher-order statistical data in wavelet domain |
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| ZHANG Qiu-yu,ZHANG Yan,YUAN Zhan-ting.A new image steganalysis method for higher-order statistical data in wavelet domain[J].Journal of Lanzhou University of Technology,2009,35(5). |
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| Authors: | ZHANG Qiu-yu ZHANG Yan YUAN Zhan-ting |
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| Institution: | ZHANG Qiu-yu,ZHANG Yan,YUAN Zhan-ting(College of Computer and Communication,Lanzhou Univ.of Tech.,Lanzhou 730050,China) |
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| Abstract: | On the basis of analysis,investigation,and modification of existing blind detection algorithm,a new method for blind detection of secret information in JPEG image was proposed.This method was used to decompose the DCT coefficients of JPEG images in wavelet domain and then calculate a series of higher-order statistical features of the sub-band wavelet coefficients,making up 72-dimensional feature vector.By introducing feature zooming technique,this 72-dimensional feature vector was scaled up and down,and cla... |
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| Keywords: | steganalysis wavelet transform higher-order statistics feature scaling support vector machine |
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