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Method for extracting overhead line systemwire abrasion area

An extraction method and catenary technology, applied in image data processing, filling planes with attributes, instruments, etc., to achieve the effect of reducing requirements, improving analysis efficiency, and improving visualization level

Pending Publication Date: 2021-10-08
CHENGDU TANGYUAN ELECTRICAL APPLIANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the current technical solution, the time-consuming operations such as image grayscale and screening wire area are all calculated by the CPU.

Method used

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  • Method for extracting overhead line systemwire abrasion area
  • Method for extracting overhead line systemwire abrasion area
  • Method for extracting overhead line systemwire abrasion area

Examples

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Comparison scheme
Effect test

Embodiment 1

[0037] As a preferred embodiment of the present invention, with reference to the attached Figure 1-4 , this example discloses:

[0038] A method for extracting a wear area of ​​a catenary wire, comprising the following steps:

[0039]Step S1, input the original grayscale image of the catenary wire into the shader script of the high-level shader language, declare that the image corresponds to the texture sampler; bind the determined texture sampler to the pixel shader; Input the original grayscale image in the main function to obtain the pixel texture coordinate element matrix tex of the entire original grayscale image; the so-called pixel texture coordinate element matrix tex, each element represents the coordinate of the pixel, and the type of each element Can be set to float2 type. For example:

[0040] In the shader script of the high-level shader language, the gray value 0 corresponds to flaot (0.0), the gray value 255 corresponds to float (1.0), and white is expressed...

Embodiment 2

[0061] As another preferred embodiment of the present invention, with reference to the attached Figure 1-4 , this example discloses:

[0062] A method for extracting the wear area of ​​a flexible catenary wire, comprising the following steps:

[0063] According to the original grayscale image analysis of catenary wires, such as figure 1 , figure 2 and image 3 As shown, the following conclusions can be drawn: the gray value of the whole image is divided into three areas, D area (background area), a and c area (catenary wire area), b area (wire wear area), these three The gray value of the area has obvious difference; it is known that the gray value of D area (background area) is 0 black, and the gray value of a and c areas (catenary wire area) is lower and greater than 0; b area (wire wear area) with a higher gray value.

[0064] Input the original grayscale image of the catenary wire into the shader script of the high-level shader language, and declare the correspondin...

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Abstract

The invention discloses an extraction method of an overhead line system wire abrasion area, and relates to the technical field of subway system overhead line system wire measurement in urban rail transit. According to the method, Direct3D software is used for image calculation acceleration, and a high-order shader language (HLSL) is used for pipeline coding of image calculation; image processing calculation is replaced by the GPU graphics card from a traditional CPU, the powerful image calculation capacity of the GPU is utilized, all cores are submitted to the GPU graphics card to work, the processing speed is greatly increased, the requirement for computer configuration is low, the method can be achieved through an integrated graphics card or an independent graphics card, and the calculation efficiency of extracting the abrasion area from the image can be greatly improved.

Description

technical field [0001] The invention relates to the technical field of metro system catenary conductor measurement technology in urban rail transit, in particular to a method for extracting the wear area of ​​catenary conductors. Background technique [0002] The catenary is a high-voltage transmission line that is erected in a "zigzag" shape along the sky above the rails in the electrified railway, and is an important part of the electric railway. When the contact wire interacts with the pantograph, the contact surface of the pantograph-catenary interaction will produce erosion and wear, which is called contact wire wear. Uneven friction between the contact wire and the carbon slide, long maintenance periods, and environmental erosion are the main reasons for the wear of the contact wire. Contact wire wear detection is of great significance to train operation. [0003] On March 20, 2020, the State Intellectual Property Office published an invention patent with the publica...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06T7/11G06T7/136G06T7/44G06T7/73G06T7/90G06T11/40
CPCG06T7/0008G06T7/11G06T7/136G06T7/44G06T7/73G06T7/90G06T11/40G06T2207/10024
Inventor 赵文军刘颖强李想占栋王瑞锋张楠周蕾李治友佘朝富陈洪友刘华云
Owner CHENGDU TANGYUAN ELECTRICAL APPLIANCE
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