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Method and device for QR (quick response) two-dimension code position detection

A two-dimensional code and graphic detection technology, which is applied in the field of image processing to achieve the effect of reducing a large number of judgment operations, high precision and easy operation.

Active Publication Date: 2015-09-30
FUJIAN LANDI COMML EQUIP CO LTD
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  • Abstract
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to realize the position detection of QR two-dimensional code with simple operation and high precision, reduce a large number of judgment operations caused by the interference of non-target graphics, improve efficiency, avoid complex algorithms, and judge step by step at the same time, so as to realize Low false detection rate and missed detection rate

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  • Method and device for QR (quick response) two-dimension code position detection

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Embodiment Construction

[0026] In order to describe the technical content, achieved goals and effects of the present invention in detail, the following descriptions will be made in conjunction with the embodiments and accompanying drawings.

[0027] Please refer to figure 1 , Embodiment 1 of the present invention provides a method for detecting the position of a QR two-dimensional code, including the following steps:

[0028] S1: Obtain the first image of the target and the background containing the QR two-dimensional code;

[0029] S2: Perform binarization processing on the first image to obtain a second image containing only black pixels and white pixels;

[0030] S3: Scan the second image to obtain a position detection pattern;

[0031] S4: judging that the positional relationship of the center points of the position detection graphics forms an isosceles right triangle;

[0032] S5: Locating the QR two-dimensional code.

[0033] QR two-dimensional code is a matrix two-dimensional code symbol i...

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Abstract

The invention discloses a method and a device for QR (quick response) two-dimension code position detection. The method comprises steps as follows: S1, obtaining a first image containing a target and a background of a QR two-dimension code; S2, performing binarization processing on the first image so as to obtain a second image only containing black pixel points and white pixel points; S3, scanning the second image to acquire a position detection graph; S4, judging the position relation of center points of the position detection graph and forming an isosceles right triangle; S5, positioning the QR two-dimension code. According to the method and the device, the operation is simple and convenient, the precision is high, a large quantity of judgment operations caused by interference of a non-target graph are reduced, the efficiency is improved, and complicated algorithms are avoided.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method and device for detecting the position of a QR two-dimensional code. Background technique [0002] Two-dimensional code related technologies have become more and more common, and the requirements for decoding performance of two-dimensional codes are getting higher and higher, and QR code (QR two-dimensional code) is one of the most commonly used two-dimensional codes, in which the position detection of the target And positioning is the most critical step, and fast and accurate positioning plays a key role in improving decoding performance. [0003] Some currently implemented location detection algorithms are more complex and slower. For example, the patent application number 201410422618.7 uses a clustering algorithm, which requires multiple judgments on multiple candidate points. [0004] Cluster analysis, also known as group analysis, is a statistical analysi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/10
Inventor 蒋声障吴卫东
Owner FUJIAN LANDI COMML EQUIP CO LTD
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