CAJ | 학술논문

红外热成像技术广泛应用于很多领域，故将红外热成像技术与图像处理相结合对接触网热状态进行检测。在图像处理中，首先进行红外图像的预处理，然后采用基于互信息的图像模板匹配对红外图像目标进行检测与识别。互信息是图像模板匹配的相似性度量标准，且图像模板的互信息计算即联合概率分布估计的主要方法是非参数窗法，针对 NP 窗法计算时间较长的缺点，采用三角形分布代替 NP 窗法的均匀分布的改进非参数窗法。实验结果表明了MNP法计算的联合概率分布的准确性更高且计算时间也较短。
홍외열성상기술엄범응용우흔다영역，고장홍외열성상기술여도상처리상결합대접촉망열상태진행검측。재도상처리중，수선진행홍외도상적예처리，연후채용기우호신식적도상모판필배대홍외도상목표진행검측여식별。호신식시도상모판필배적상사성도량표준，차도상모판적호신식계산즉연합개솔분포고계적주요방법시비삼수창법，침대 NP 창법계산시간교장적결점，채용삼각형분포대체 NP 창법적균균분포적개진비삼수창법。실험결과표명료MNP법계산적연합개솔분포적준학성경고차계산시간야교단。
Infrared thermal imaging technology was widely used in many fields. So infrared thermal imaging technology and image processing were combined in detection of catenary thermal state. In image processing, firstly, image preprocessing was used for infrared thermal images, and then mutual information-based image template matching was used to detect and recognize the targets of infrared image. Mutual information was similarity measure criterion in image template matching, and Non-Parametric (NP) window method was to estimate the Joint Probability Distribution Function (JPDF) for underlying template. For weakness of NP window method was long computing time, Modified Non-Parametric (MNP) window method was used with a triangle distribution instead of uniform distribution in the original NP window. Experimental results show that accuracy in calculating the joint probability distribution of MNP method is higher and the image template matching time is shortened.