A semi-automatic extraction method and device for insulators based on infrared images

Abstract

The embodiment of the present invention provides a semi-automatic extraction method and device for insulators based on infrared images, which solves the problem of the current thermal infrared image recording the surface temperature of the object, which has low resolution and simple texture. It is necessary to measure the temperature of infrared insulators. , it is necessary to automatically locate the precise position of the center line of the insulator, resulting in a relatively difficult technical problem. The method in the embodiment of the present invention includes: acquiring the insulator image in the rectangular frame containing the insulator selected by capturing the sliding track in the infrared image; performing edge extraction on the insulator image in a rectangular area; The insulator image is traversed in a straight line, and statistics are performed with multiple schemas; the edge strength cycle detection and cycle situation screening are performed on multiple schemas to obtain the corresponding cycle parameters, and according to the graphs corresponding to the insulator texture characteristics According to the periodic statistical characteristics of the insulator, the histogram corresponding to the center line of the insulator with the greatest possibility is selected, and the exact position of the center line of the insulator is determined.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a method and device for semi-automatically extracting insulators based on infrared images. Background technique [0002] At present, the extraction of image insulators in the process of power inspection at home and abroad mostly focuses on two aspects-based on image segmentation or based on machine learning. Among them, the image segmentation method can realize the contour positioning of the insulator when the background is simple and the difference between the background and the foreground is obvious. rate, but the amount of calculation is large, the training process is complicated, and it is not easy to accurately locate the center line of the insulator required for infrared diagnosis. [0003] Thermal infrared images record the surface temperature of the captured object, which has low resolution and simple texture. If you want to measure the temperature of infrared in...

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Problems solved by technology

[0005] The embodiment of the present invention provides a semi-automatic extraction method and device for insulators based on infrared images, which solves the problem of the current thermal infrared image recording the surface temperature of the object, which has low resolution and simple texture. It is necessary to measure the temperature of infrared insulators. , it is necessary to automatically locate the precise position of the centerline of the insulator, resulting in a difficult technical problem

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