基于细节增强分析的硬件木马红外图像检测方法
计算机工程与应用（2018）
Abstract
将RO环(Ring Oscillator,环形振荡器)作为可信任安全性设计是一种检测硬件木马是否植入的有效方式,硬件木马的植入会形成低温区,从而导致RO环热边界改变。面对低温区红外信号相对较弱的特点,提出了一种融合了时间维和空间维的细节增强方法,即先在时间维使用自适应滤波降低噪声,然后在空间维使用基于引导滤波的细节增强方法锐化图像。实验结果表明,经此方法处理后红外图像信噪比为20.110 4 d B,相比原始红外图片提高了6.142 1 d B,相比单纯降噪提高了3.595 6 d B,相比单纯细节增强提高了3.605 0 d B,具有更优秀的降噪性能和更丰富的细节,可以显化低温区热边界并检测硬件木马的植入。
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