A Two-Dimensional Code of Circular Image-finding Graphics and Its Generation and Interpretation Method

A technology for image-seeking graphics and two-dimensional codes, which is applied in the field of two-dimensional codes, can solve problems such as the inability to quickly generate and decode two-dimensional codes, the long time it takes to generate and decode, and the weak anti-fuzziness of two-dimensional codes. It achieves the effects of shortening the time of image-seeking, good anti-blurring performance, and improving operation speed

Active Publication Date: 2021-11-16
FOSHAN SHUNDE SUN YAT SEN UNIV RES INST +2
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Most of the existing two-dimensional code image-finding graphics are composed of rectangular modules. Some image-finding graphics are circular, but their information matrix is ​​a small rectangle. Coding, the method is complicated, the error correction performance is not high, it takes a long time to generate and decode, and the QR code cannot be quickly generated and decoded

Method used

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  • A Two-Dimensional Code of Circular Image-finding Graphics and Its Generation and Interpretation Method
  • A Two-Dimensional Code of Circular Image-finding Graphics and Its Generation and Interpretation Method
  • A Two-Dimensional Code of Circular Image-finding Graphics and Its Generation and Interpretation Method

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Embodiment Construction

[0032] figure 1 It is a two-dimensional code with a circular image-seeking pattern. The two-dimensional code includes an image-finding pattern composed of three large black circles and a matrix composed of small black circles. The centers of the three large black circles form an isosceles right-angled triangle.

[0033] The specific diameter ratio of the large black circle and the small black circle is 4:1. The matrix is ​​the information point of the two-dimensional code. The position with a small black circle represents 1, and the position without a small black circle represents 0. The distance between adjacent information points is 1:1. Trademarks of any shape can be embedded in the big black circle, such as figure 2 Shown is the trademark in the shape of a five-pointed star embedded in a large black circle.

[0034] A method for generating a two-dimensional code of a circular image-finding graphic, the steps of which are as follows:

[0035] S1: Convert the data stream...

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Abstract

The invention discloses a two-dimensional code with a circular image-seeking pattern and a method for generating and interpreting the two-dimensional code. The two-dimensional code includes an image-finding pattern composed of three large black circles and a matrix composed of small black circles. The three The centers of the great black circles form an isosceles right triangle. The steps of the generating method are as follows: converting the data stream into a byte stream, encoding, determining the size of the two-dimensional code, arranging the image-finding graphics, converting into a matrix, arranging the matrix, and generating the two-dimensional code image. The steps of the interpretation method are: scan the two-dimensional code picture, process it, search for the image-finding pattern, correct the two-dimensional code, convert it into a 0 / 1 matrix, decode the matrix, translate it into data information, and complete the interpretation. The image-finding graphics and matrix are both circular, with simple structure, good anti-fuzziness, and easy identification. Hough transform algorithm can be used for detection to improve its decoding speed. The LDPC code with medium and short code length is used for encoding, and its error correction performance is higher than that of RS algorithm.

Description

[0001] The invention relates to a two-dimensional code, in particular to a two-dimensional code with a circular image-finding pattern and a method for generating and interpreting the two-dimensional code. Background technique [0002] Since the popularity of the QR code, it has always been the focus of public attention, both in terms of its convenience and safety. Most of the existing two-dimensional code image-finding graphics are composed of rectangular modules. Some image-finding graphics are circular, but their information matrix is ​​a small rectangle. Encoding, the method is complicated, the error correction performance is not high, and it takes a long time to generate and decode, so it cannot quickly generate and decode the QR code. Contents of the invention [0003] In order to solve the problems of the prior art, the object of the present invention is to provide a method for generating and interpreting a two-dimensional code of a circular image-finding pattern, whic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K19/06G06K7/14
CPCG06K7/1421G06K19/06046
Inventor 周达敏陈荣军嵇志辉谢舜道李小敏朱雄泳
Owner FOSHAN SHUNDE SUN YAT SEN UNIV RES INST
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