Container number identification method

An automatic identification and container technology, applied in the field of image recognition, can solve the problems of low recognition efficiency and achieve the effects of high precision, improved continuity and fast recognition speed

Inactive Publication Date: 2011-04-20
SHANGHAI MARITIME UNIVERSITY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0009] The present invention aims at the low identification efficiency of the existing container number identification technology, and provides an automatic container number identification method, which effectively combines the positioning and segmentation of the contai

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Embodiment Construction

[0057] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0058] The container number consists of 11 digits, of which the first three digits are the main code of the container, which are uppercase English letters, the fourth digit is the equipment identification code-the character "U", the last six digits are the numbers of the specific container number, and the last digit is surrounded by a rectangular border. Surrounded by the check digit, it is obtained by the first ten characters through a certain combination of operations. There are box numbers on each side of the container, but the box numbers are arranged irregularly, and there are four styles: one line, two lines, four lines, and one column. The present invention proposes a novel automatic identification method based on the characteristics of t...

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Abstract

The invention discloses a container number identification method which comprises the following steps of, firstly, after acquiring pictures of a container number, searching a frame of a container, calculating the inclination with the frame as a reference line, and intercepting pictures in the frame subjected to correction; secondly, carrying out graying and dynamic binarization on the intercepted pictures, and filtering noise interference; thirdly, scanning and segmenting container number character pictures which satisfy the conditions one by one through a rank scanning method; fourthly, accurately extracting 11-bit container number characters which satisfy the conditions by determining an equipment identifier; and fifthly, extracting character characteristics one by one to finish the identification process, and judging whether the container number is correct by combining a check bit. The invention improves the process of respectively carrying out location, segmentation and identification of the traditional container number identification algorithm, enhances the continuity of a whole system and also has the advantages of rapid identification speed and high accuracy.

Description

technical field [0001] The invention relates to an image recognition technology, in particular to a container number automatic recognition technology. Background technique [0002] Each container has its unique box number. These box numbers will be used every time the container enters and exits the port, warehouse, and customs. The box number will appear on the five sides of the container (there is no box number on the bottom), and At present, most terminals, ports, customs and warehouses use operators to record these box numbers and then input them into computers, which not only wastes a lot of time and manpower, but also causes errors in records due to various negligence of operators. [0003] Based on the above problems, more and more people expect machines to be able to read characters and numbers automatically, quickly and correctly to improve work efficiency. Due to the automatic recognition technology of automobile license plates, it is widely used in the transportat...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/54
Inventor 辉林如郭喜凤安博文
Owner SHANGHAI MARITIME UNIVERSITY
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