Conductor untwisted strand detection method based on region growth

Abstract

The invention discloses a conductor untwisted strand detection method based on region growth. The detection method comprises the following steps: 1) inputting an aerially photographed power transmission conductor a top-view image I to obtain a gray image A; and obtaining a conductor region image C through a region growth method; 2) performing color inversion on the conductor region image C to obtain a color-inverted image D, and then performing threshold segmentation by using a Bersen algorithm to obtain a binary image E; 3) performing morphological processing on the binary image E, firstly removing a small region less than a designated pixel area, and then performing the expansion processing to respectively obtain an image F and an image H; performing center axis extraction, and rotatingthe image F to obtain an image J if the image F and the image H are not parallel; and 4) judging an untwisted strand location according to the a conductor single strand slope obtained by fitting, andperforming the marking. The method disclosed by the invention is simple in principle, visual and practical, and capable of accurately positioning the untwisted strand location.

Description

technical field [0001] The invention belongs to the technical field of electric power detection equipment, and relates to a detection method for loose wire strands based on region growth. Background technique [0002] Steel-cored aluminum stranded wire is a reinforced wire with single-layer or multi-layer aluminum strands twisted outside the galvanized steel core wire. It is a kind of overhead wire and is mainly used in high-voltage transmission lines of power systems. Because during high-voltage power transmission, when the voltage reaches 10k V or more, the rubber and plastic insulation with a thickness of 30mm has often lost its effect (easy to be broken down by high voltage), so high-voltage power transmission usually uses bare wires, by enlarging the distance between wires and wire pairs. Ground distance and installation of insulators and other measures to achieve the purpose of insulation between lines. At the same time, the steel core is used to strengthen the mechan...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for detecting loose strands of wires based on region growth, which solves the problem that the existing technology uses manual detection of wire image data of transmission lines, and the detection results are not only affected by human subjective factors, but also have low efficiency.

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