QR two-dimension bar code recognition method and system based on field programmable gate array

A two-dimensional barcode and recognition method technology, applied in the field of barcode recognition, can solve problems such as the gap between reading rate and reading speed, achieve good real-time performance, high reliability, and improve the efficiency of program execution

Inactive Publication Date: 2009-08-12
CHONGQING UNIV
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Problems solved by technology

According to detailed market research, most of the two-dimensional barcodes are developed abroad. Although many two-dimensional barcodes have become international or domestic standards, the key technologies for various two-dimensional barcode recognition are still abroad. In the hands of the company, although there are a few companies or re...

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  • QR two-dimension bar code recognition method and system based on field programmable gate array
  • QR two-dimension bar code recognition method and system based on field programmable gate array
  • QR two-dimension bar code recognition method and system based on field programmable gate array

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Embodiment Construction

[0038] The technical solution of the present invention will be further described in detail according to the accompanying drawings in the description.

[0039] figure 1 The QR code structure diagram is shown. Each QR code symbol is composed of nominally small square modules, forming a square array, consisting of coding areas and functional graphics including image finding graphics, separators, positioning graphics and correction graphics. . Functional graphics cannot be used for data coding, and the symbols are surrounded by blank areas. The finding pattern includes three identical position detection patterns, located in the upper left corner, upper right corner and lower left corner of the symbol, which are used to determine the position of the QR code. Between each position detection pattern and the coded area there is a separator with a width of 1 module, which consists entirely of light-colored modules. The role of positioning graphics is to determine the density and ve...

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Abstract

The invention provides a two-dimensional bar code recognition system based on a field programmable gate array (FPGA) and a realization method thereof. An FPGA core chip, a bar code acquisition camera and a liquid crystal display screen are adopted to construct a hardware platform of the bar code recognition system. Functions realized by the whole system comprise the acquisition of a two-dimensional bar code image, the displaying of the bar code image, the decoding of a bar code, the real-time displaying of decoding data on the liquid crystal display screen, and the sending of the decoding data through a network. The whole bar code recognition system is realized under an embedded system based on the FPGA, and provides a simple and quick symbolic information extraction method.

Description

technical field [0001] The invention belongs to the technical field of barcode identification, and relates to a field programmable gate array (FPGA)-based QR two-dimensional barcode identification method and system, that is, an FPGA-based QR code identification technology. Background technique [0002] Barcode technology is an emerging technology developed on the basis of computer technology and information technology that integrates coding, printing, identification, data collection and processing. The barcode that people usually see printed on the product package is a one-dimensional barcode, which is composed of a group of regularly arranged bars, spaces and their corresponding characters, indicating the identification of certain information. Among them, the bar is in dark color, and the space is in light color, which is used for scanning and identification of barcode reading equipment: the corresponding characters (that is, characters for human recognition) are composed o...

Claims

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Application Information

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IPC IPC(8): G06K7/10
Inventor 何伟张玲黄丹灵张立易明
Owner CHONGQING UNIV
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