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
CN108256609BActive Publication Date: 2021-11-16FOSHAN SHUNDE SUN YAT SEN UNIV RES INST +2
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
FOSHAN SHUNDE SUN YAT SEN UNIV RES INST
Publication Date
2021-11-16

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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.
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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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