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Insulator defect detection method based on multi-angular-point registration

A detection method and corner detection technology, which is applied in the direction of measuring devices, optical testing flaws/defects, image data processing, etc., can solve problems such as low detection efficiency, high work intensity of detection personnel, and high detection difficulty, so as to improve the recognition speed , Reduce the difficulty of manual inspection, improve efficiency and accuracy

Pending Publication Date: 2020-12-22
SHANGHAI DIANJI UNIV
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

In order to detect external defects of insulators, inspectors were usually relied on to inspect the line in the past. The problem is that the detection is difficult, the detection efficiency is low, and the work intensity of the inspectors is high, especially for complex terrain.
At present, these difficulties can be overcome by using drones to take pictures, but this method has high requirements for the efficiency and accuracy of computer identification of defects and faults in insulator images

Method used

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  • Insulator defect detection method based on multi-angular-point registration

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0025] like figure 1 As shown, the present invention relates to an insulator defect detection method based on multi-corner registration, which specifically includes the following steps:

[0026] Step 1. The computer recognizes all the corners in the image by identifying the optimized Harris corner detection of the insulator image. These corner points are numbered on the basis of recognition.

[0027] The image is taken by a drone, and the angle and environment are complex. It is necessary to use a computer to identify corners to complete co...

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Abstract

The invention relates to an insulator defect detection method based on multi-angular-point registration, and the method comprises the steps: selecting a plurality of angular points in an image on thebasis of insulator positioning through employing an insulator defect detection technology based on multi-angular-point registration, and dividing the angular points into a plurality of groups of angular points according to the geometric or topological relationship between the angular points; and performing multi-group straight line fitting through a central axis symmetric line obtained during insulator positioning, identifying whether the straight line meets the symmetric relationship of an insulator device, and completing multi-group angular point registration. Compared with the prior art, the invention has the advantages that the insulator defect detection efficiency and accuracy are greatly improved, the recognition speed is high, the invention is simple, convenient and effective, and the manual inspection difficulty is reduced.

Description

technical field [0001] The invention relates to the technical field of maintenance equipment for power transmission and transformation lines, in particular to an insulator defect detection method based on multi-corner registration. Background technique [0002] Today, with the rapid economic development, the scale of the power grid continues to expand, and the scope of coverage is getting wider and wider. For the safety of power grid operation, the maintenance work of power transmission and transformation lines is very important. In power transmission and transformation lines, insulators play an important role in insulation and suspension fixation. Insulators are also the largest number of power transmission and transformation equipment. Because most of the transmission lines are erected in the field, the working environment of these insulators is harsh, and the electromechanical combination effect is obvious, so the insulation performance and mechanical performance of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T7/13G01N21/88
CPCG06T7/0004G06T7/13G01N21/8851G06T2207/30164
Inventor 王逸群张宸浩陆丽
Owner SHANGHAI DIANJI UNIV
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