Computer vision detection technology-based method for detecting and identifying QR (Quick Response) code

A technology of computer vision and detection technology, applied in the direction of electromagnetic radiation induction, etc., to achieve high detection accuracy, low failure rate, and low cost

Active Publication Date: 2011-11-02
SICHUAN UNIV
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a QR code detection and recognition method based on digital image processing technology to solve the problem of detecting and reading QR codes when the image is distorted and the QR code positioning graphics are blocked

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  • Computer vision detection technology-based method for detecting and identifying QR (Quick Response) code
  • Computer vision detection technology-based method for detecting and identifying QR (Quick Response) code
  • Computer vision detection technology-based method for detecting and identifying QR (Quick Response) code

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Embodiment Construction

[0042] figure 1 Shown, the left side of the computer is connected with a digital camera and LED fill light, and the right side of the computer is connected with a buzzer, display and buttons (keyboard). The invention is mainly composed of a digital camera, supplementary light equipment (such as LED supplementary light), positioning indicating equipment, and an embedded computer or an industrial control computer.

[0043] The basic idea of ​​the present invention is as follows: a QR code detection and recognition method based on computer vision detection technology, including digital camera, supplementary light equipment, positioning indicating equipment and embedded computer or industrial control computer, is carried out according to the following steps:

[0044] 1) read the color image through the computer-driven digital camera;

[0045] 2) Preprocessing the color image, including denoising and smoothing filtering;

[0046] 3) Convert the color image to a grayscale image;

...

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Abstract

The invention relates to a computer vision detection technology-based method for detecting and identifying a QR (Quick Response) code. According to the method, a computer, a digital camera, a light supplementing device and an acousto-optical prompt device are mainly comprised, wherein a video signal of the digital camera is output to the computer; after receiving input of a video sensor, the computer controls the light supplementing device and the acousto-optical prompt device; a QR code intelligent detection module is installed in the computer and used for detecting, extracting and decoding a QR code graph through circularly reading frame data in a scanning video; and if successful, a user is prompted through a buzzer. According to location characteristic detection of the QR code, the computer vision detection technology-based method for detecting and identifying the QR code solves the problem of extracting and decoding of the QR code which is defected and blocked by a locator in a complex illumination background, has the characteristics of low cost, no complex mechanical device resulting in faults easily and capability of utilizing the traditional intelligent equipment effectively and expansion of the traditional functions with an algorithm module.

Description

technical field [0001] The invention belongs to a two-dimensional barcode automatic detection and recognition method based on video technology, in particular to a QR code intelligent detection device based on a video sensor. Background technique [0002] As an information medium between people, goods and smart devices such as computers, barcode recognition technology is playing an increasingly important role in the booming field of the Internet of Things. Compared with other identification methods, barcode technology has the advantages of low cost, convenient use, and high reliability. However, due to the small amount of information, the traditional one-dimensional barcode has gradually become difficult to adapt to the rapidly developing social needs. In this situation, various two-dimensional barcodes with larger information capacity and higher error correction capabilities have been proposed one after another. At the same time, the cost of the camera based on digital ima...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/10
Inventor 王俊峰唐鹏陈懿高琳杜涛
Owner SICHUAN UNIV
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