Laser point cloud power transmission line segmentation method based on spatial relationship

Abstract

The invention discloses a laser point cloud power transmission line segmentation method based on a spatial relationship. The method comprises the steps of projecting power transmission line laser point cloud three-dimensional data to an XOY plane; calculating a convex hull of the line laser point cloud data; respectively calculating the maximum distances from the nodes of the convex hulls in the left-right direction to the plane coordinate connection equation of the tower, and if the sum of the distances in the left-right direction exceeds 1m, carrying out linear fitting by utilizing a least square method to form two left and right edges; calculating distances from the laser point cloud data of the power transmission line to left and right side lines; projecting the power transmission linelaser point cloud data segmented on the XOY plane to the XOZ plane, and calculating a convex hull of the line laser point cloud data; sequentially taking out the nodes of the convex hull and connecting the nodes into a line, and segmenting the laser point cloud data of the power transmission line according to the trend of the connecting line until the segmentation of the laser point cloud data ofthe power transmission line is completed. The technical problem that the accuracy of laser point cloud data splitting cannot be ensured in the prior art is solved.

Description

technical field [0001] The invention belongs to the technical field of electric power, and in particular relates to a laser point cloud transmission line segmentation method based on spatial relationships. Background technique [0002] The split calculation method of transmission lines based on laser point cloud is an important and key step in the analysis and display of laser point cloud data of transmission lines. The split laser point cloud data directly affects the analysis quality and display effect of laser point cloud data. At present, the split method of laser point cloud data is mostly based on the height information of the power line, using the laser point cloud data of the transmission line and the elevation difference of the projected laser point cloud data to judge, which cannot guarantee the accuracy of the laser point cloud data split. There are still some problems in the current research on the power line segmentation algorithm, which can be summarized as fol...

AI Technical Summary

Problems solved by technology

[0003]The technical problem to be solved by the present invention: provide a laser point cloud transmission line segmentation method based on spatial relationship to solve the problem of laser point cloud transmission line segmentation in the prior art Segmentation exists by using the laser point cloud data of the transmission line and the elevation difference of the projected laser point cloud data to judge, and the accuracy of the laser point cloud data division cannot be guaranteed and other technical problems