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Method and device for identifying barcodes

A barcode recognition and barcode technology, applied in the field of image recognition, can solve the problems of inability to deal with complex situations and the inability of scanning guns to identify, and achieve the effect of improving the recognition speed and reducing the misread rate of barcodes.

Inactive Publication Date: 2010-11-03
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The scanning gun obtains the binary number string based on the reflected wavelength of visible light, which cannot handle complex situations. For example, if the barcode graphics "black and white bars" are too dense or the colors of the "black and white bars" are similar, the scanning gun can hardly recognize them.

Method used

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  • Method and device for identifying barcodes
  • Method and device for identifying barcodes
  • Method and device for identifying barcodes

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Embodiment Construction

[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] The present invention first extracts the pixel information of the barcode by means of camera terminal shooting or scanner scanning, etc., then converts the pixel information into 0, 1 binary number strings, and then uses the similarity principle in the image lattice to perform similarity on the binary number strings. Matching not only enables high-speed and effective recognition of one-dimensional barcode graphics, but also is almost immune to environmental influences, such as light, barcode graphics integrity, etc. The following takes shooting by a camera terminal as an example for specific description.

[0036] The bar code identification method of the present invention specifically comprises the steps:

[0037] The first step is to use a camera terminal such as a mobile phone camera terminal to take pictures of the barcode ...

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Abstract

The invention discloses a method and a device for identifying barcodes, which can improve identification rate and identification speed, can identify the non-integral time barcodes and cannot be influenced by light rays during identification. The method comprises the following steps of: A, extracting barcode pixel information in a way of camera terminal shooting or scanner scanning; B, converting the pixel information into binary numeric strings by using a principle of consistent bar background colors or a principle of consistent barcode black line colors; C, segmenting the binary numeric strings by taking barcode values as units; and D, matching each section of binary numeric strings acquired by segmentation respectively by using a principle of similitude in an image dot matrix, and judging whether the barcodes are successfully identified according to custom matching rules.

Description

technical field [0001] The invention belongs to the technical field of image recognition, in particular to a barcode recognition method and device. Background technique [0002] A barcode is composed of bars and spaces with different widths and different reflectivities, compiled according to certain coding rules (code system), and is used to express a set of graphic identifiers of numeric or alphabetic symbol information. That is to say, the barcode is a group of parallel line graphics with different thicknesses arranged according to certain rules. Common barcodes are composed of black bars (abbreviated as bars) and white bars (abbreviated as empty) with very different reflectivity. Because objects of different colors reflect different wavelengths of visible light, the scanning gun uses this principle to convert black and white bars into corresponding 0 and 1 binary number strings by emitting laser scanning barcode graphics, and then identify them according to the coding ru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/20
Inventor 管声俊李林代小铃
Owner ZTE CORP
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