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A machine vision-based method for counting carriages of railway vehicles

A railway vehicle and machine vision technology, applied in the field of railway vehicle carriage counting, and railway vehicle carriage counting based on machine vision, can solve the problems of loss, high work intensity of personnel, harsh working environment, etc., achieving a small amount of calculation and low maintenance cost. Effect

Active Publication Date: 2020-12-11
BEIJING UNIV OF CHEM TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual use, due to the harsh working environment, electronic tags have problems of damage and loss
Therefore, some stations count the number of train cars by counting the number of people when the freight train passes by. This method has the problem of high labor intensity and inaccurate counting.

Method used

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  • A machine vision-based method for counting carriages of railway vehicles
  • A machine vision-based method for counting carriages of railway vehicles
  • A machine vision-based method for counting carriages of railway vehicles

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Experimental program
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Embodiment

[0032] Such as figure 1 Shown is the principle flowchart of the method of the present invention. This method counts the number of freight wagons based on the law of grayscale changes during train running. Since the grayscale changes greatly during the day, it is easy to count, so here we use the example of trucks entering the station at night. The specific implementation steps are divided into the following points.

[0033] (1) Obtaining the observation window: select the observation window with the mouse, and click two points, which are the upper left corner and the lower right corner of the rectangular observation window. Obtain the observation window that needs to be calculated. Such as figure 2 Schematic diagram of the effect of the observation window

[0034] (2) Image filtering processing: gray-scale conversion is performed on the video, and each frame of image is converted into a gray-scale image, and filtering processing is performed.

[0035] (3) Window feature ...

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Abstract

The invention discloses a railway vehicle carriage counting method based on machine vision, belongs to the field of railway transportation safety management, and solves the problems that an electronictag is damaged and lost due to a severe working environment. Therefore, when a freight train passes through some stations, the number of carriages of the train is counted through a personnel countingmethod, and the problems of high personnel working intensity and inaccurate counting exist. The invention designs a railway vehicle carriage counting method based on machine vision, the number of carriages of trucks is accurately counted, and the trucks of a freight train can be distinguished from a locomotive part. The method is realized through five steps of observation window selection, imagefiltering processing, window feature statistics, time sequence feature screening and carriage number counting.

Description

technical field [0001] The invention belongs to the field of railway transportation safety management, and relates to a method for counting railway vehicle carriages, in particular to a method for counting railway vehicle carriages based on machine vision. Background technique [0002] In the process of socialist modernization in the new era, railway transportation is playing an increasingly important role. Due to its large transportation capacity and low cost, it has been widely used in coal, freight and other fields. However, due to train failures, personnel negligence and other reasons, some freight train carriages are left behind, and the phenomenon of slipping occurs from time to time. In order to prevent the impact of the slipping phenomenon on subsequent transportation and industrial production, it is necessary to count the number of trucks at each station. [0003] At present, the automatic railway number identification system (ATIS) is often used in China to count ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/246G06T7/73G06T5/00
Inventor 马波吕哲蔡伟东江志农
Owner BEIJING UNIV OF CHEM TECH
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