基于轮廓线波动规律的高铁接触网绝缘子提取方法研究

Study on the Extraction Method of High-speed Railway Contact Insulator Based on Contour Fluctuation Law

考虑接触网各支撑杆、斜拉线、定位器的交叉分布特征,提出一种基于轮廓线波动规律的绝缘子提取方法。首先对拍摄到的接触网悬挂装置全局图像进行二值化处理,并进行数字形态学运算;其次对各连通域进行轮廓线提取;随后通过轮廓线的曲率计算,确定各轮廓线规律性波动区域,从而确定全局图像中绝缘子分布位置。试验结果表明该方法能精确提取绝缘子。

Considering the cross-distribution characteristics of the supporting rods,cable-stayed lines and steady arms of the catenary,a method of insulator extraction based on the contour fluctuation law was proposed.In this paper,firstly,the captured global image of the catenary suspension device was binarized and digital morphology calculation was performed.Secondly,contour lines were extracted from each connected domain.Then,through the curvature calculation of the contour line,the regular fluctuation area of each contour line was determined,so as to determine the distribution position of the insulator in the global image.The test results showed that the method in this paper could accurately extract the insulator.