Coding, positioning and recognition method of two-dimensional code

Abstract

The invention discloses a novel QR code coding, positioning and identifying method. Mark posts are added into a 2D matrix to achieve fixed coding information, on the basis of QR code symbols of an n*n matrix, a column of all 0 / 1 is added to the left side of each column of the matrix, coding is carried out by transforming the n*n matrix into an n*2n matrix and the phenomenon that printing cannot be carried out due to the fact that a QR code is incoherent during hollow-out printing, and when the QR code is positioned and identified later, the n*2n matrix is transformed into the n*n matrix; and thus, the QR code can be identified conveniently, the incoherent phenomenon during hollow-out printing is avoided, and the problem that the whole QR code area cannot be represented completely is solved. The method is suitable for printing and identified the hollow-out printed QR code.

Description

technical field [0001] The invention belongs to the fields of information storage and 3D printing, and relates to a coding, positioning and recognition method of a two-dimensional code. Background technique [0002] DataMatrix is ​​a two-dimensional code widely used in the field of international manufacturing. It was invented by the American International Data Corporation in 1989. It is widely used in anti-counterfeiting and overall identification of commodities. It is a code that can be directly marked on a solid surface. The code can be used like ordinary The bar code is also automatically read by the corresponding scanning device, which is very popular in the manufacturing industry. At present, Data Matrix is ​​widely used in product identification, anti-counterfeiting, quality tracking, automatic storage, logistics management and control and other systems. Data Matrix adopts complex error correction code technology, which makes the code have super anti-pollution ability...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a method for encoding, positioning and identifying two-dimensional codes, adding benchmarks in the middle of the two-dimensional matrix to achieve fixed coding information, and adopting the two-dimensional code symbols based on the n*n matrix , add a column of all 0 or all 1 values ​​​​to the left of each column of the matrix, and convert the n*n matrix into an n*2n matrix for encoding, so as to prevent the two-dimensional code from being incoherent during hollow printing. The phenomenon of printing, when the two-dimensional code is positioned and recognized later, it is converted into an n*n matrix, which can not only facilitate the recognition of the two-dimensional code, but also solve the incoherent phenomenon that occurs during hollow printing, and cannot Completely represent the problem of the entire QR code area

Images