Identification method for truck numbers of railway tank trucks

A vehicle numbering and recognition method technology, applied in the direction of character and pattern recognition, instruments, computer parts, etc., can solve the problems of difficult promotion, heavy workload, increased cost, etc., achieve low implementation cost, increase productivity, save The effect of time and cost

Inactive Publication Date: 2015-05-27
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The manual copying method has a large workload and is prone to recording errors; the radio frequency identification method needs to install a radio frequency chip on each vehicle, which increases the cost and is not easy to promote

Method used

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  • Identification method for truck numbers of railway tank trucks
  • Identification method for truck numbers of railway tank trucks
  • Identification method for truck numbers of railway tank trucks

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Experimental program
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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0028] A method for identifying the model of a railway oil tank car, which identifies the model of a railway oil tank car, and its processing flow chart is as follows figure 1 shown, including the following steps:

[0029] S1. Use the camera to take a grayscale image of the side of the tank truck body:

[0030] The camera is installed on the side of the tanker, and its position is fixed at a distance from the tanker. When the tanker passes by, a trigger signal is generated for shooting. When multiple tankers pass sequentially, a pair of tanker can be photographed for each tanker. Partial side image, by adjusting the installation position of the camera so that the image only contains the vehicle number area, such as figure 2 shown.

[0031] S2. Calculate the edge of the local side grayscale image:

[0032] The Canny edge detection operator is used to dete...

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PUM

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Abstract

The invention discloses an identification method for truck numbers of railway tank trucks. The method comprises the following steps: shooting grayscale images of local side surfaces of tank truck bodies by virtue of a video camera; calculating the edges of the grayscale images; positioning character zones of the edge images; carrying out binarization on grayscale images of the local side surfaces of the tank truck bodies; carrying out morphological processing on the character regions of binary images, removing isolated points, and connecting broken characters; carrying out segmentation processing on the characters, and determining the position and the range of a single character region; and inputting the segmented characters into a general character recognition engine and outputting a result. The identification method has the characteristics of low implementation cost and high automatic degree.

Description

technical field [0001] The invention belongs to the field of machine vision recognition, and in particular designs a method for recognizing the vehicle number of a railway oil tank car that can automatically complete the recognition. Background technique [0002] At present, my country's refined oil transportation is mainly based on large railway tank cars, and each railway tank car has its own model and serial number. The mainstream models of railway oil tank cars in my country are "G60", "G70" and "GQ70", which respectively represent oil tank cars with a load of 60 tons and 70 tons, and the number is used as a mark of the oil tank car to record and distinguish Vehicles, which are usually printed on the side of the tank and on the frame of the rear wheel of the vehicle. In terms of the number of characters, the car model is usually 3 or 4 letters and numbers, and the number is 7 numbers. The characters are arranged in a single line, with the vehicle type in the front and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/54
Inventor 项学智包文龙王猛徐旺旺白二伟葛长赟张磊乔玉龙
Owner HARBIN ENG UNIV
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