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An automatic detection and recognition method for the door opening of railway freight cars

A door opening and automatic detection technology, applied in the field of image processing and pattern recognition, can solve the problems of truck door safety hazards and easy missed inspections, and achieve the effect of reducing safety hazards, reducing missed inspections, and low false recognition rate

Active Publication Date: 2019-01-18
TIANJIN OPTICAL ELECTRICAL GAOSI COMM ENG TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the high-speed operation of the train, it is easy to have a safety hazard of the door opening of the freight car
At this stage, due to the fast speed of trains and human visual fatigue factors, it is easy to miss detection

Method used

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  • An automatic detection and recognition method for the door opening of railway freight cars

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Embodiment Construction

[0032] With reference to accompanying drawing, a kind of automatic detection and recognition method of railway wagon door opening is the picture detection and recognition algorithm based on image lateral similarity and K-Means clustering, and it comprises the steps:

[0033] Step 1, get the picture;

[0034] Using a linear array CCD camera, the real-time resolution of each vehicle is not less than 7000*2048 pixels, and the accuracy of each pixel is 2mm, and the safety net picture is obtained at the railway site;

[0035] Step 2, extracting texture based on image lateral similarity;

[0036] (1) Carry out filtering preprocessing to the image;

[0037] Use a Gaussian filter to preprocess the image, the window size is [9,1], and σ is 3;

[0038] (2) Extract image texture based on image lateral similarity;

[0039] Calculate the pixels with horizontal continuity P(x i ,y i ) need to meet:

[0040] And such points must appear 35 or more consecutively in the x direction, and...

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Abstract

The invention relates to the fields of image processing and pattern recognition, in particular to an automatic detection and recognition method for the door opening of a railway freight car. It is a picture detection and recognition algorithm based on image lateral similarity and K-Means clustering, characterized in that it comprises the following steps: step A, obtaining pictures; step B, extracting image textures; step C, based on improved K-Means classification The method clusters the door coordinates. This application is based on the edge texture detection based on the principle of image lateral similarity and the door coordinate positioning based on the target clustering algorithm, and realizes the automatic detection and recognition of the state of the railway wagon door based on the linear array CCD image. This method has high detection accuracy and low false recognition rate, and at the same time, the fast detection speed also meets the actual engineering needs, which greatly reduces the missed detection, reduces the burden on the staff, and reduces safety hazards.

Description

technical field [0001] The invention relates to the fields of image processing and pattern recognition, in particular to an automatic detection and recognition method for opening a railway wagon door. Background technique [0002] Keeping the wagon door closed is an important measure to ensure the safety of railway operation and cargo safety. The running train is in a high-speed dynamic state. If the doors are not closed normally, the goods will jump out, and the goods will roll, overturn or fall or collapse due to the influx of airflow. When transporting goods in a truck, keeping the doors closed is an important safety precaution. In the high-speed operation of the train, the potential safety hazard of the door opening of the freight car is prone to occur. At this stage, due to the fast speed of trains and human visual fatigue factors, it is easy to miss inspections. In view of the current reality that manual inspection is difficult in the station, it is necessary to ins...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G06K9/46G06K9/62
CPCG06T7/0002G06T2207/30268G06V10/44G06F18/23213
Inventor 俞大海雷生胡宏磊张红
Owner TIANJIN OPTICAL ELECTRICAL GAOSI COMM ENG TECH