A method for generating and identifying two-dimensional codes

Abstract

The invention provides a two-dimensional code, and the two-dimensional code comprises a recognition unit matrix with a plurality of rows and a plurality of columns. Each blank unit row is disposed between each two adjacent rows of recognition units, and each blank unit column is disposed between each two adjacent columns of recognition units. Each blank unit is formed by 3*3 modules which comprise white modules. Each recognition unit is formed by 3*3 modules which comprise black modules and white modules, and the 3*3 modules of each recognition unit comprise two black modules and seven white modules. The distance between the two black modules of each recognition module is equal to the size of at least one white module, and each recognition unit stores a four-bit binary string. The invention also provides a two-dimensional mode generation and recognition method, and the method improves the anti-interference performance and decoding efficiency.

Description

technical field [0001] The invention relates to two-dimensional code technology, in particular to a method for generating and identifying two-dimensional codes. Background technique [0002] Two-dimensional codes are widely used in various industries because of their large storage capacity, high confidentiality, high traceability, and strong damage resistance. At present, most common two-dimensional codes are matrix codes (such as DM codes and QR codes, etc.), which use black and white blocks to represent binary 1 and 0, and stack black and white blocks in a certain combination to form a two-dimensional code, and include The positioning part for positioning and the data part for storing information, but because of the dense and uneven color blocks of the existing matrix two-dimensional code, it is necessary to place the code area in an independent and clean area so that people can Quickly find the area that needs to be scanned, and ensure that the QR code decoding is not di...

AI Technical Summary

Problems solved by technology

At present, most common two-dimensional codes are matrix codes (such as DM codes and QR codes, etc.), which use black and white blocks to represent binary 1 and 0, and stack black and white blocks in a certain combination to form a two-dimensional code, and include The positioning part for positioning and the data part for storing information, but because of the dense and uneven color blocks of the existing matrix two-dimensional code, it is necessary to place the code area in an independent and clean area so that people can Quickly find the area that needs to be scanned, and ensure that the QR code is decoded without interference

Because the matrix module is relatively monotonous, designers often choose to modify the two-dimensional code in order to reduce the abruptness of the two-dimensional code, which is prone to produce two-dimensional codes that do not meet the coding standards and cause difficulties in code recognition

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