A method for detection of loose wire strands based on region growing

A technology of region growth and detection method, which is applied in measuring devices, optical testing flaws/defects, image enhancement, etc., can solve problems such as low efficiency and the influence of human subjective factors on detection results, and achieve the effect of simple principle

Active Publication Date: 2021-07-27
XI'AN POLYTECHNIC UNIVERSITY
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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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  • A method for detection of loose wire strands based on region growing
  • A method for detection of loose wire strands based on region growing
  • A method for detection of loose wire strands based on region growing

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Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] refer to figure 1 , the present invention is based on the detection method of the wire loose strands of area growth, implements according to the following steps:

[0022] Step 1. Input the overhead view image I of the transmission wire obtained by aerial photography, and first gray-scale processing to obtain the gray-scale image A; then extract the wire area by the region growing method to obtain the wire area image C;

[0023] Due to the influence of wind speed and airflow on the overhead transmission wire, there is breeze vibration most of the time, and the view image of the transmission wire acquired by the UAV image collector is prone to blurring; The images of the transmission lines captured by the left and right views have different characteristics. The images of the transmission lines captured by the left and right views are af...

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Abstract

The invention discloses a method for detecting loose strands of wires based on region growing. The steps include: 1) inputting an aerial view image I of a power transmission wire to obtain a grayscale image A; and then obtaining a region image C of the wire through a region growing method; 2) The image C of the wire area is reversed to obtain the reversed image D, and then the Bersen algorithm is used for threshold segmentation to obtain the binary image E; 3) The binary image E is morphologically processed, and the small area smaller than the specified pixel area is removed first, and then the Expansion processing, image F and image H are respectively obtained, and then the central axis is extracted, and image J is obtained by rotating image F if it is not parallel; 4) According to the slope of the wire single strand obtained by fitting, the position of the loose strand is judged and marked. The principle of the present invention is simple, intuitive and easy to implement, and can accurately locate the position of scattered strands.

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G06T7/11G06T7/136G06T7/187G06K9/00G01N21/88G01N21/95
CPCG06T7/0004G06T7/11G06T7/136G06T7/187G01N21/8851G01N21/95G01N2021/8887G06T2207/20061G06T2207/30108G06T2207/10024G06T2207/10016G06V20/13
Inventor 黄新波章小玲张烨杨璐雅
Owner XI'AN POLYTECHNIC UNIVERSITY
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