The invention discloses an automatic matching method and device for a steel rail contour based on linear structured light, and the method comprises the steps: obtaining a steel rail contour collection point set, and obtaining a first feature collection point based on the collection point set; acquiring a second feature acquisition point in the steel rail contour acquisition point set based on a position relationship between a first feature acquisition point pairing point in a standard contour and a preset second feature acquisition point pairing point in the standard contour; obtaining an initial affine transformation parameter based on the first feature collection point, the second feature collection point, the first feature collection point pairing point and the second feature collection point pairing point; and on the basis of the initial affine transformation parameters, utilizing an ICP algorithm to iteratively search the optimal affine transformation parameters between the steel rail contour collection point set and the point set of the standard contour, and obtaining a pairing point set of the standard contour, which is registered with the steel rail contour collection point set under the optimal affine transformation parameters. According to the method, the robustness of steel rail contour matching is greatly improved.
本发明公开了一种基于线结构光钢轨轮廓自动匹配方法及装置,该方法包括获取钢轨轮廓采集点集,基于采集点集获取第一特征采集点;基于标准轮廓中第一特征采集点配对点和预设第二特征采集点配对点在标准轮廓中的位置关系获取所述钢轨轮廓采集点集中的第二特征采集点;基于第一特征采集点、第二特征采集点、第一特征采集点配对点和第二特征采集点配对点获取初始仿射变换参数;基于初始仿射变换参数,利用ICP算法迭代搜索所述钢轨轮廓采集点集和标准轮廓的点集之间的最优仿射变换参数,并获取在所述最优仿射变换参数下与所述钢轨轮廓采集点集配准的标准轮廓的配对点集。本发明大幅度提高了钢轨轮廓匹配的鲁棒性。
Steel rail contour automatic matching method and device based on linear structured light
一种基于线结构光钢轨轮廓自动匹配方法及装置
2022-11-08
Patent
Electronic Resource
Chinese
Track contour measuring device based on structured light
European Patent Office | 2021
|Steel rail head full-contour abrasion damage measurement system
European Patent Office | 2021
|Rail wear measurement method based on structured-light vision
British Library Online Contents | 2010
|Contour matching: a curvature-based approach
British Library Online Contents | 1998
|