Identification method for transmission line tower inspection by unmanned aerial vehicle

A technology of transmission lines and identification methods, which is applied in image data processing, instruments, calculations, etc., and can solve problems such as unusable applications, poor positioning effects, and low identification efficiency

Active Publication Date: 2015-08-26
STATE GRID INTELLIGENCE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing image recognition methods for overhead transmission line towers can realize the image location of towers through Harris corner detection and corner density clustering, but this method has low recognition efficiency and poor positioning effect, and cannot be used in actual applications. in application

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  • Identification method for transmission line tower inspection by unmanned aerial vehicle
  • Identification method for transmission line tower inspection by unmanned aerial vehicle
  • Identification method for transmission line tower inspection by unmanned aerial vehicle

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Embodiment Construction

[0061] The present invention will be further defined below in conjunction with the accompanying drawings and specific embodiments.

[0062] An efficient identification method for unmanned aerial vehicle inspection of transmission line towers, such as figure 1 shown, including the following steps:

[0063] 1. The LSD algorithm realizes the detection steps of the straight line:

[0064] (1) Scale scaling:

[0065] In order to eliminate the aliasing effect, the input image is operated on by Gaussian downsampling, where scale s=0.8, Σ=0.6, σ=Σ / s.

[0066] G ( x , y , σ ) = 1 2 πσ 2 e - ( x 2 + ...

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Abstract

The invention discloses an identification method for transmission line tower inspection by an unmanned aerial vehicle, which comprises the steps of acquiring an image of a to-be-inspected transmission line; extracting a linear image in the image of the transmission line by means of an LSD algorithm, storing finally obtained lines in Line, and recording the start point of each line; counting the number of the lines and the lengths of the lines, filtering the line image according to the lengths of the lines; blocking the filtered line image; counting the number of tower blocks in the image of the to-be-inspected transmission line, and according to the number of the tower blocks and the distribution area of the tower blocks, determining whether the tower image contains the tower. The identification method is beneficial in that a quick identification technique for the transmission line tower can effectively realize positioning to the tower in the inspection image and lays basis for subsequent defect analysis. The identification method furthermore has functions of screening the image which is obtained in inspection, reducing the load in manual screening, and realizing wide application prospect.

Description

technical field [0001] The invention relates to digital image processing and pattern recognition technology in the technical field of transmission line equipment monitoring, and in particular to an efficient transmission line tower identification method for UAV inspection. Background technique [0002] The tower is an important part of the overhead transmission line. Its function is to support the overhead line conductor and the overhead ground wire, and to make the connection between the conductor and the conductor, between the conductor and the overhead ground wire, between the conductor and the tower, and between the conductor and the earth and the ground. There is sufficient safety distance between crossing objects. The shape of the tower of the overhead transmission line mainly depends on the voltage level, the number of lines, the terrain, the geological conditions and the conditions of use. For the processing of inspection images of overhead transmission lines, the e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
CPCG06T7/0008G06T2207/10016G06T2207/30232
Inventor 王万国刘俍王滨海雍军慕世友任杰傅孟潮张晶晶魏传虎刘越李建祥赵金龙
Owner STATE GRID INTELLIGENCE TECH CO LTD
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