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High-performance two-dimensional bar code decoding method

A technology of two-dimensional bar code and decoding method, which is applied in the fields of instruments, character and pattern recognition, computer parts, etc. High performance and reliability

Inactive Publication Date: 2013-05-29
天津物联传感科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the characteristics of two-dimensional barcodes, the process of identifying and reading them has become extremely complicated, and the decoding processing method has become the three key elements that are difficult to balance in terms of speed, accuracy and reliability.

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  • High-performance two-dimensional bar code decoding method
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Embodiment Construction

[0029] Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:

[0030] A high-performance two-dimensional barcode decoding method is realized on the two-dimensional barcode collection and decoding system, such as figure 2 As shown, the two-dimensional barcode collection and decoding system includes: a lighting system that supplements light on the collected area; an optical focusing system that can be manually or automatically adjusted; a digital image sensor with sufficient resolution coupled to the focusing system ; The digital image acquisition channel connected with the digital image sensor; the image processing system connected with the digital image acquisition channel, with a central processing unit in the image processing system; the data communication system with communication function and connected with the image processing system.

[0031] The high-performance two-dimensional barcode decoding method ...

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Abstract

The invention relates to a high-performance two-dimensional bar code decoding method which comprises the following steps of: (1) carrying out image downsampling treatment on a digital image A containing a two-dimensional bar code to generate a reduced image B; (2) carrying out image enhancement treatment on the downsampled image B to obtain an enhancement image C; (3) carrying out lowpass filtering and local threshold binarization treatment on the enhancement image C to obtain a black and white image D; (4) carrying out partitioning and sequencing on the black and white image D and marking communicated regions; (5) partitioning networks of the connected regions and generating a grid matrix; and (6) carrying out decoding and error correction according to the generated grid matrix, wherein the output digital image A contains a decoding valve of the two-dimensional bar code. The method has reasonable design and the characteristics of high decoding speed, high accuracy and reliability, and the like and improves the decoding performance, and the decoding capacity to the two-dimensional bar code is not influenced by the density, the size and the placement direction of the two-dimensional bar code, thus the method can be completely applied to occasions having rigorous conditions and higher requirement on scanning speed.

Description

technical field [0001] The invention belongs to the technical field of barcodes, in particular to a high-performance two-dimensional barcode decoding method. Background technique [0002] Two-dimensional barcode is an ideal method to realize the functions of information storage, carrying and automatic reading. Two-dimensional barcode has the following characteristics: high density, large capacity, high reliability; it has error correction function; it can represent multiple languages ​​and characters; it can represent image data; it can introduce encryption mechanism and so on. Two-dimensional barcode decoding equipment is usually a machine vision system composed of an embedded processor, and a processing program that can decode two-dimensional barcodes is built in the embedded processor. Due to the characteristics of two-dimensional barcodes, the process of identifying and reading them has become extremely complicated, and the decoding processing method has become three ke...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00
Inventor 李丹李春鹏
Owner 天津物联传感科技有限公司
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