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Automatic detection and identification method for railway wagon door opening

A door opening and automatic detection technology, applied in character and pattern recognition, image data processing, instruments, etc., can solve problems such as hidden dangers of truck door safety and easy to miss detection, so as to reduce hidden dangers, reduce missed detection, and reduce The effect of false recognition rate

Active Publication Date: 2017-01-18
TIANJIN OPTICAL ELECTRICAL GAOSI COMM ENG TECH
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  • 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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  • Automatic detection and identification method for railway wagon door opening

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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 belongs to the field of image processing and pattern recognition, and specifically relates to an automatic detection and identification method for railway wagon door opening. The method is an image detection and identification algorithm based on image lateral similarity and K-Means clustering, and is characterized by comprising the following steps: step A, acquiring an image; step B, extracting image texture; and step C, clustering the door coordinates based on an improved K-Means classification method. The method is based on edge texture detection of the image lateral similarity principle and door coordinate positioning of a target clustering algorithm. Through the method, the door state of a railway wagon can be automatically detected and identified based on a linear array CCD image. The method has very high detection precision and low rate of false identification. Moreover, the high detection speed meets the demand of practical engineering, the probability of missed detection is reduced greatly, the burden on workers is eased, and the potential safety hazard is reduced.

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. Keeping the doors closed is an important safety precaution when transporting goods in a truck. 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 inst...

Claims

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Application Information

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Patent Type & Authority Applications(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
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