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Point cloud analysis-based multi-vegetation region power transmission corridor hidden danger point rapid extraction method

An extraction method and technology of hidden points, which are applied in the field of rapid extraction of hidden points of power transmission corridors in multi-vegetated areas based on point cloud analysis, which can solve the problems of complex calculation, too many feature vector dimensions, and long period.

Pending Publication Date: 2019-04-19
GUIZHOU POWER GRID CO LTD
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for quickly extracting hidden danger points of power transmission corridors in multi-vegetated areas based on point cloud analysis, so as to solve problems caused by too many feature vector dimensions and classifier design defects in the point cloud classification of power transmission line corridors Problems with complex calculations and long cycles

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  • Point cloud analysis-based multi-vegetation region power transmission corridor hidden danger point rapid extraction method
  • Point cloud analysis-based multi-vegetation region power transmission corridor hidden danger point rapid extraction method
  • Point cloud analysis-based multi-vegetation region power transmission corridor hidden danger point rapid extraction method

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Embodiment Construction

[0076] Aiming at the characteristics of transmission line corridors in multi-vegetation-covered areas, the present invention provides a method for quickly extracting hidden danger points in transmission corridors in multi-vegetation areas based on point cloud analysis, using airborne Lidar point cloud data to quickly find the distance between transmission lines and trees is too low, etc. Hidden danger points to solve the problem of complex calculation and long cycle caused by too many feature vector dimensions and classifier design defects in the point cloud classification of transmission line corridors.

[0077] A fast extraction method for hidden danger points of transmission corridors in multi-vegetated areas based on point cloud analysis (see figure 1 ), including the following steps:

[0078] Step 1. Divide the point cloud data into n grids, and the point cloud data of each grid is recorded as W i (i=1,2,3...,n);

[0079] Step 2, filtering the point cloud data in each g...

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Abstract

The invention discloses a point cloud analysis-based multi-vegetation region power transmission corridor hidden danger point rapid extraction method. The method comprises the steps of 1, dividing point cloud data into a plurality of grids; Step 2, filtering the point cloud data in each grid; Step 3, extracting ground points from the point cloud data in each grid; 4, constructing a feature vector of the point cloud data to be classified; 5, constructing a training sample set and designing a classifier based on sparse representation; 6, optimizing the calculation method of the undetermined parameters of the classifier; 7, classifying the point cloud data in each grid; Step 8, searching hidden danger points in the grid according to a classification result; Step 9, combining hidden danger point data in each grid; The problems of complex calculation and long period caused by too many feature vector dimensions and classifier design defects in power transmission line corridor point cloud classification are solved.

Description

Technical field: [0001] The invention belongs to the operation and maintenance technology of overhead transmission lines, in particular to a method for quickly extracting hidden danger points of transmission corridors in multi-vegetated areas based on point cloud analysis. Background technique: [0002] In order to ensure the safety of electric power, the electric power department invests a lot of manpower and material resources every year to inspect and repair the transmission corridors. Transmission lines span large spans, and transmission line corridors often have diverse environments. For areas with a lot of vegetation, the main safety hazard of transmission lines is too tall trees. If the distance between the transmission line and the tree is too small, it will cause the discharge of the transmission line to the ground, causing safety accidents such as tripping and electric shock to people and animals. Therefore, timely detection of hidden dangers and corresponding mea...

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Application Information

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IPC IPC(8): G06K9/00G06K9/46G06K9/62
CPCG06V20/176G06V10/50G06F18/24G06F18/214
Inventor 石书山杨磊陈凤翔陈科羽张伟杜昊周小红李文涛石蕾谢皓凌刘凌轶娄鹏彦
Owner GUIZHOU POWER GRID CO LTD
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