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A method for measuring the cross-sectional area of ​​a cable conductor

A measurement method and technology for cable conductors, which are used in measurement devices, image analysis, instruments, etc., can solve the problems of high cost, low accuracy, and low practicability of the method, and achieve low cost, high accuracy, and clear conductor outlines. Effect

Active Publication Date: 2020-12-29
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a method for measuring the cross-sectional area of ​​a cable conductor, which is used to solve the technical problem that the existing method for measuring the cross-sectional area of ​​a cable conductor is not high in practicability due to low precision and / or high cost

Method used

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  • A method for measuring the cross-sectional area of ​​a cable conductor
  • A method for measuring the cross-sectional area of ​​a cable conductor
  • A method for measuring the cross-sectional area of ​​a cable conductor

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Embodiment 1

[0046] A method 100 for measuring the cross-sectional area of ​​a cable conductor, such as figure 1 shown, including:

[0047] Step 110, adopting the same magnification ratio, taking color images of the cross-section of the cable and the standard rod respectively;

[0048] Step 120, using the superpixel segmentation method to cluster and segment each image to obtain multiple superpixels;

[0049] Step 130, based on a plurality of superpixels of each image, using a region merging method to determine the contour of the conductor in the image;

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Abstract

The invention discloses a cable conductor sectional area measurement method. The cable conductor sectional area measurement method comprises the steps of: respectively shooting cross section color images of a cable and a standard rod by adopting the same amplification ratio; carrying out clustering segmentation on each image to obtain a plurality of super pixels by adopting a super pixel segmentation method; based on the plurality of super pixels of each image, determining a conductor outline in the image by adopting a region merging method; and counting the number of pixel points in each conductor outline and on the basis of a conductor region area in a cross section corresponding to the standard rod, calculating a conductor sectional area of the cable so as to complete measurement. According to the invention, firstly, the same size of cable and standard rod cross section color images are acquired, and then according to a gap between a cable conductor and a non-conductor and differences in colors of coating layer materials, a set of digital image processing mode of distinguishing the cable conductor from the non-conductor by utilizing color difference information is introduced; the cable conductor sectional area measurement method is convenient and rapid to operate in the whole processing process, is high in accuracy, cannot cause damage to a detected object, and has high economic benefits and high practicality.

Description

technical field [0001] The invention belongs to the field of cable detection, and more specifically relates to a method for measuring the cross-sectional area of ​​a cable conductor. Background technique [0002] The development of the cable industry is closely related to the construction of major projects in our country. It is widely used. The application of cables has the following advantages: 1. The transmission lines of power cables require small space and low requirements for laying paths, which will not occupy valuable urban space. 2. Cable laying is an underground project, and the cable lines will eventually be covered by roads and buildings without disturbing the urban landscape. 3. The same underground passage can accommodate multiple cable lines, which can greatly improve the load capacity of the power line. [0003] However, the cable industry is still facing many problems at present, mainly due to the large number of unqualified cables and the difficulty in trou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/28G01B11/24G06T7/11G06T7/62
CPCG01B11/24G01B11/28G06T7/11G06T7/62
Inventor 刘毅沈尹扩林福昌李化
Owner HUAZHONG UNIV OF SCI & TECH
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