Insulator detecting method based on orthogonal direction projection

Abstract

The invention relates to an insulator detecting method based on orthogonal direction projection. The insulator detecting method comprises the steps that firstly, the upper boundary and the lower boundary of an insulator area are acquired through the projection of an insulator image in the horizontal direction; secondly, a PCA method is utilized for calculating the included angle between the main direction and the horizontal direction of the insulator image; thirdly, direction correction is carried out on the insulator image through a rotation matrix, and the image is reorganized according to the corrected coordinates; fourthly, an integral projection curve of the insulator image in the vertical direction is acquired, the horizontal position of an insulator is acquired according to the change rate of the integral curve, and after the position information of the insulator image is acquired, whether the selected area is the insulator or not is judged according to the machine studying method; lastly, the coordinates of the insulator area are reversely rotated, and then the precise position of the insulator in the original image can be acquired. By means of theory simulation and a large number of experiments, it proves that the insulator detecting method is high in detecting speed and detecting precision and capable of meeting the requirement of unmanned aerial vehicle polling.

Description

technical field [0001] The present invention relates to image processing, machine learning and automatic target recognition technology, specifically to use image processing technology to detect and identify insulators, and belongs to the field of automatic target recognition. Background technique [0002] With the increase of ultra-high voltage and large-capacity transmission lines, the safe operation of transmission lines is becoming more and more important. The inspection of power lines is particularly necessary, and the detection of insulators is crucial to the safe operation of transmission lines. The traditional power line inspection process is that the staff go to the site to inspect the line in person. Therefore, patrol inspection is affected by too many human factors, which will endanger the lives of patrol workers in dangerous areas, and the amount of manual data entry is large, and errors are prone to errors during the manual data entry process. UAV is an unmanned...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the above problems, the purpose of the present invention is to propose an accurate and real-time insulator detection method based on projection in orthogonal directions, which effectively solves the technical problem of drones inspecting insulators under complex backgrounds

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