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Character two-dimensional bar code recognition method based on scanning gun

A technology of two-dimensional barcode and recognition method, which is applied in the field of two-dimensional barcode recognition, and can solve the problems of image processing, recognition, and decoding of two-dimensional barcodes without characters

Inactive Publication Date: 2014-02-19
ZHEJIANG UNIV OF TECH
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AI Technical Summary

Problems solved by technology

[0006] In order to overcome the shortcomings of the existing technology that cannot process, recognize, and decode the character two-dimensional barcode image obtained from the scanning gun, the present invention provides a character two-dimensional barcode recognition method based on the scanning gun

Method used

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  • Character two-dimensional bar code recognition method based on scanning gun
  • Character two-dimensional bar code recognition method based on scanning gun
  • Character two-dimensional bar code recognition method based on scanning gun

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Embodiment Construction

[0044] With reference to accompanying drawing, further illustrate the present invention:

[0045] refer to figure 1 , a character two-dimensional barcode recognition method based on a scanning gun, comprising the following steps:

[0046] (1) Obtain a grayscale image of 844*644 size from the scanning gun;

[0047] (2) Two-digit barcode for characters (refer to figure 2 ) positioning, the locator is a solid circle, first use the cross method to obtain the center of the circle, find all connected regions suspected of locators, perform geometric screening, and then further filter the obtained connected regions through shape angles to exclude character connected domains and other background connected domains , and then locate and execute circularity through circularity screening;

[0048] (3) Perform distortion correction and bilinear interpolation method to extract the character area of ​​the character two-dimensional barcode;

[0049] (4) Binary processing of the character ...

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Abstract

A character two-dimensional bar code recognition method based on a scanning gun includes the steps of obtaining a gray level image from the scanning gun, conducting positioning on a solid circle locator in the gray level image, extracting a character area through a distortion correction and bilinear interpolation method; conducting binarization processing and denoising on the character area, conducting transverse and longitudinal histogram normalization on the character area, then, conducting secondary smoothing, determining segment lines through crests and troughs, then conducting resegmentation on characters obtained through segmentation, accurately obtaining the character area, conducting normalization processing on the characters to form a 20*30 dot matrix, extracting character characteristics, and conducting recognition through characteristic matching. The character two-dimensional bar code recognition method is mainly characterized in that rapid recognition of a character two-dimensional bar code is achieved on the basis of the scanning gun and under limitation of limited internal storage and time.

Description

technical field [0001] The invention relates to a two-dimensional barcode recognition method, which is character barcode recognition based on a scanning gun. Background technique [0002] At present, one of the mobile value-added services is to transmit graphic two-dimensional barcodes (mainly Data Matrix and QR codes) by sending multimedia messages. This has certain requirements for the user's mobile terminal and communication network, and requires mobile terminal equipment to support graphic display. This limits the application of electronic ticket to a certain extent. [0003] In response to this situation, some text-oriented two-dimensional barcodes have gradually come out. However, these character two-dimensional barcodes are still in the experimental stage, and the recognition technology is also constantly being explored. [0004] At present, since there is no uniform standard for character two-dimensional barcodes, the coded character sets of these existing characte...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/36G06K7/10
Inventor 刘志姜帆叶胜程潘翔郑河荣
Owner ZHEJIANG UNIV OF TECH
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