Point cloud data-oriented power tower key structure parameter extraction method and system

The invention discloses a point cloud data-oriented power tower key structure parameter extraction method and system. According to the technical scheme, the method comprises the following steps: performing data format conversion and standardization on a power tower point cloud subjected to laser scanning, and converting original data into an own coordinate system of a power tower; voxel filtering and statistical filtering are carried out on the tower point cloud, and the point cloud density is reduced; adjusting the point cloud coordinate system to be symmetrical to the point cloud coordinate system; and solving the tower nominal height, the wire and ground wire hanging point middle distance and the wire and ground wire hanging point height according to the symmetric plane parameters. According to the method, the most important parameters such as tower nominal height, lead hanging point height and mid-distance and ground wire hanging point height and mid-distance can be accurately extracted, the problem that