基于双目视觉的接触线几何参数测量方法

Method to Measure the Geometrical Parameter of Contact Wire Based on Binocular Vision

将双目视觉原理应用于高速铁路接触线的几何参数测量。采用2个数字相机同时采集接触线的2幅图像,通过对图像进行平滑去噪、二值化和边缘识别,确定接触线在2个相机中的成像位置,进而计算出接触线的高度和拉出值。通过实验验证了该方法在测量速度、测量精度和实现动态测量等方面的优点,对基于双目视觉的接触线检测仪器开发有实用价值。

The principle of binocular vision has been used to measure the geometric parameters of high speed railway contact wire in this paper. Two digital cameras were used to acquire two ima-ges of contact wire simultaneously,then the loca-tions of two images on two camera’s imaging plane were determined respectively by processing the im-ages using such methods as smoothing,binary,and edge recognition,and then the contact wire ’s height and its stagger can be calculated.By experi-ments it is verified that the method has such ad-vantages as quick measurement speed,high accura-cy,and suited to dynamic measurement.All these are meaningful for developing the detecting instru-ments of contact wire based on binocular vision principle.