Circular view finding graphic quick response code and generation and interpretation methods thereof

Abstract

The invention discloses a circular view finding graphic quick response code and generation and interpretation methods thereof. The quick response code comprises a view finding graph composed of threebig black circles and a matrix composed of small black circles, and the circular centers of three big black circles form an isosceles right triangle. The generation method of the quick response code comprises the steps that a data stream is converted into a byte stream, coding is carried out, the size of the quick response code is determined, the view finding graph is arranged and converted into amatrix, the matrix is arranged, and a quick response code image is generated. The interpretation method of the quick response code comprises the steps that the quick response code image is scanned and processed, the view finding graph is searched for, the quick response code is corrected and converted into a 0/1 matrix, the matrix is decoded and interpreted into data information, and interpretation is completed. Both the view finding graph and the matrix are circular, the structure is simple, an anti-fuzziness performance is high, identification is easy, a Hough transformation algorithm can be used for detection, and the decoding speed is improved. LDPC in intermediate and short code lengths are used for coding, and the error correction performance is higher than that of an 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...

AI Technical Summary

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

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