一种改进的十字交叉轨道扣件定位方法

摘要

The traditional cross positioning method fails to locate fastener area accurately, and it needs high quality images and illumination collection at specific angle to fulfill fastener positioning, which results in slow positioning. To solve the problem, an improved cross positioning method is proposed. Positioning is verified based on the initial location of the fastener reflected in the image and then it uses the median filtering enhanced image, the Canny edge processing and the gray-level projection to improve positioning accuracy and speed up the positioning rate. The test results show that the improved method can do well for illumination collection angle, fulfill quick positioning and fastener identification and conduct initial positioning in the fastener area.%针对传统的十字交叉定位法对轨道扣件区域定位不准确,对图像要求较高,需要特定角度的光照采集才能实现扣件定位,定位过程较慢等问题,提出一种改进的十字交叉定位法对其进行定位。通过对其图像中扣件的初步位置判断定位,然后用中值滤波的图像增强,Canny算子的边缘提取,灰度投影的判断来提高定位准确性,加快定位速率,通过实验表明,改进的定位方法能够很好解决光照采集角度、快速有效的定位和判断出扣件,实现对扣件区域的初定位。