| 基于假设检验的隐写分析 |
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| 引用本文： | 王仰国,王学勇,李同泽,徐波. 基于假设检验的隐写分析[J]. 数字社区&智能家居, 2010, 0(2): 299-301,323 |
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| 作者姓名： | 王仰国 王学勇 李同泽 徐波 |
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| 作者单位： | 石家庄陆军指挥学院军事运筹中心,河北石家庄050003 |
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| 基金项目： | 河北省科技攻关项目(05213579) |
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| 摘 要： | 提出了一种基于假设检验的隐写分析方案。该方案将隐写信息的存在性检测转化为二元假设检验问题．原始图像的先验概率密度函数采用隐马尔可夫树（HMT）模型进行估计。将该方案应用于乘性扩频隐写的检测，实验结果表明，基于隐马尔可夫树模型的检测器比基于独立同分布（i．i．d）模型的检测器具有更好的检测性能。
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| 关 键 词： | 隐写分析 假设检验 隐马尔可夫树模型 |
Steganalysis Based on Hypothesis Testing |
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| WANG Yang-guo,WANG Xue-yong,LI Tong-ze,XU Bo. Steganalysis Based on Hypothesis Testing[J]. Digital Community & Smart Home, 2010, 0(2): 299-301,323 |
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| Authors: | WANG Yang-guo WANG Xue-yong LI Tong-ze XU Bo |
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| Affiliation: | Military Operations Research Center;Shijiazhuang Army Command College;Shijiazhuang 050084;China |
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| Abstract: | This paper proposes a novel steganalysis scheme based on hypothesis testing.The scheme views the problem of detection the hidden data as binary hypothesis testing and uses hidden Markov tree(HMT) model to estimate the priori probability density of original image.The scheme is applied to detect multiplicative spread spectrum steganography and experimental results indicate the superiority of the HMT based detector than i.i.d based detector. |
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| Keywords: | steganalysis hypothesis testing hidden Markov tree model |
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