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Laser LiDAR power line point cloud automatic point supplementing method

A power line and point cloud technology, which is applied in the direction of measuring electricity, measuring electrical variables, and reradiation of electromagnetic waves, can solve the problems of lack of point cloud and low density of laser LiDAR power line point cloud

Active Publication Date: 2020-10-20
GUIZHOU POWER GRID CO LTD +1
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AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for automatically filling points of laser LiDAR power line point clouds to solve the technical problems of low density of laser LiDAR power line point clouds and serious lack of point clouds, reduce the workload of manual data processing, and improve the efficiency of point cloud filling. Point accuracy, providing data support for subsequent functional applications such as power line reconstruction and dangerous point detection

Method used

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  • Laser LiDAR power line point cloud automatic point supplementing method
  • Laser LiDAR power line point cloud automatic point supplementing method
  • Laser LiDAR power line point cloud automatic point supplementing method

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Experimental program
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Embodiment Construction

[0041] Step 1. Power line point cloud classification and coordinate transformation

[0042] The power line point cloud classification and coordinate conversion method described in step 1 is: obtain the center coordinates of the pole tower, and sequentially construct a rectangle centered on the pole tower connection line and extending 25 meters left and right, and the points in the rectangle are taken as the same file to realize the power line point cloud Binning. At the same time, calculate the vertical distance offset d from the point to the pole-tower line, and the projected distance l on the pole-tower line from the point to the small pole-tower line to realize coordinate conversion. The specific calculation theory is as follows:

[0043] Let the coordinates of the small tower A of any gear be (x A ,y A ), the coordinates of large tower B are (x B ,y B ), the coordinate of any point P on the power line point cloud is (x P ,y P ), constructing the vector in,

[0...

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Abstract

The invention discloses a laser LiDAR power line point cloud automatic point supplementing method. The method comprises the steps of 1 performing power line point cloud grading and coordinate conversion to obtain a power line point cloud set; 2 performing single-gear power line point cloud plane segmentation and gridding; and 3 performing point supplement calculation, namely performing point supplement on the power lines in the plane segmentation subsets. The technical problems of low laser LiDAR power line point cloud density and serious point cloud loss are solved, the workload of manual data processing is reduced, the point location precision of point supplement is improved, and data support is provided for subsequent functional applications such as power line reconstruction and dangerous point detection.

Description

Technical field: [0001] The invention belongs to the automatic processing technology of laser LiDAR point clouds of power transmission lines, and relates to a method for automatically supplementing points of laser LiDAR power line point clouds. Background technique: [0002] Airborne laser LiDAR technology is another technological revolution in the field of measurement after GNSS positioning technology. It develops the observation mode from traditional point-to-point observation to point-to-surface and line-to-surface observation. In the power line inspection work, the traditional manual inspection is labor-intensive, the working conditions are difficult, the efficiency is low, the re-inspection period is long, and the accuracy of the inspection data is not high. It is widely used in the power line inspection work of overhead transmission lines due to the advantages of less. [0003] At present, LiDAR point cloud data processing of power line inspection laser can be roughly...

Claims

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Application Information

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IPC IPC(8): G01S17/42G01R31/08G06F17/10
CPCG01S17/42G01R31/086G01R31/088G06F17/10
Inventor 虢韬徐梁刚杨恒杨刘贵时磊杨渊刘勇龙新赵健王迪
Owner GUIZHOU POWER GRID CO LTD
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