Method, device and terminal for identifying two-dimensional code

A two-dimensional code and code element technology, applied in the field of two-dimensional code identification, can solve the problem of increasing the error probability in the two-dimensional code identification process, and achieve the effect of reducing the number of transformation operations and reducing the error probability.

Active Publication Date: 2018-12-07
TENCENT TECH (SHENZHEN) CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] Both the positioning operation and the normalization operation need to transform the shape and orientation of the two-dimensional code, and performing multiple transformation operations on the two-dimensional code will increase the error probability of the two-dimensional code recognition process

Method used

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  • Method, device and terminal for identifying two-dimensional code
  • Method, device and terminal for identifying two-dimensional code
  • Method, device and terminal for identifying two-dimensional code

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Embodiment Construction

[0045] With the widespread use of QR codes, users expect to be able to insert images into the QR code. The image may be, for example, a user-defined avatar or LOGO.

[0046] Such as figure 1 As shown, the traditional two-dimensional code technology will insert the user's avatar in the middle area of ​​the two-dimensional code, and add some extended patterns on the periphery of the two-dimensional code.

[0047] Inserting an image into a two-dimensional code will block part of the code elements of the two-dimensional code. In the process of recognizing the two-dimensional code, it is necessary to use the error correction function of the two-dimensional code to correct the blocked part, which reduces the error of the two-dimensional code. recognition efficiency.

[0048]For ease of understanding, a traditional two-dimensional code (such as a quick response (quick response, QR) code) is firstly introduced.

[0049] A traditional two-dimensional code is generally set in a two-d...

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Abstract

Provided are a method, device and terminal for identifying a two-dimensional code. The two-dimensional code includes an image area and a coding area, and the image area and the coding area do not overlap each other. The method includes: selecting pixels included in the symbols in the coding area from the pixels of the two-dimensional code; The included pixels determine the values ​​of the code elements in the encoding area; and identify the two-dimensional code according to the values ​​of the code elements in the encoding area. Compared with the traditional scheme, this scheme can reduce the error probability of the two-dimensional code recognition process.

Description

technical field [0001] The present application relates to the field of two-dimensional code recognition, and more specifically, to a method, device and terminal for recognizing two-dimensional codes. Background technique [0002] Traditional two-dimensional codes are rectangular two-dimensional codes. Before recognizing traditional two-dimensional codes, not only the two-dimensional codes need to be positioned, but also the two-dimensional codes need to be normalized. The normalization operation refers to mapping the two-dimensional code into a standard rectangular image, so that each symbol of the two-dimensional code corresponds to a pixel in the rectangular image. In the process of recognizing the two-dimensional code, as long as the recognition of the rectangular image The value of one code element of the QR code can be determined by the color of one pixel. [0003] Both the positioning operation and the normalization operation need to transform the shape and orientatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K7/14
CPCG06K7/1417G06K7/1421G06K19/06037G06K7/015G06K7/1473
Inventor 许典平林榆耿冉辰李晶晶王泓扬翁乐腾陈浩
Owner TENCENT TECH (SHENZHEN) CO LTD
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