Dot matrix code recognition method

Abstract

The invention discloses a dot matrix code recognition method. The method is characterized by comprising the following steps: 1) an image of at least one complete basic code area is read, wherein the dot matrix code is formed by a plurality of basic code areas, and each basic code area comprises a positioning code area and a data code area distributed with code points respectively; 2) code points in the basic code area are classified into code points in the positioning code area and code points in the data code area; 3) the grid center formed by the code points in the positioning code area is defined as the central point of the data code area; 4) according to the number of code points in the data code area and the direction away from the central point of the data code area, codes of the code points in the data code area are determined; and 5) the codes of all code points in the data code area are combined to calculate the code value of the overall code area. By adopting the method of the invention, the recognition rate is high, the recognized hardware memory is lowly required, and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of identification codes, and in particular relates to an identification method of a dot matrix code. Background technique [0002] Two-dimensional bar code / two-dimensional bar code (2-dimensional bar code) is a specific geometric figure, according to certain rules in the plane (two-dimensional direction) distribution of black and white graphics to record data symbol information; Cleverly use the concept of "0" and "1" bit streams that constitute the internal logic basis of the computer, use several geometric shapes corresponding to binary to represent text and numerical information, and automatically read and read through image input equipment or photoelectric scanning equipment. Realize automatic processing of information: it has some common features of barcode technology: each code system has its specific character set; each character occupies a certain width; it has a certain verification function, etc. ...

AI Technical Summary

Problems solved by technology

In the process of use, due to the large amount of stored information, the hardware requirements in the recognition process, such as the CPU memory requirements for background processing, are relatively large, which makes the hardware cost of recognition relatively high. At the same time, due to the large amount of stored information, the recognition speed It is also relatively low, and in the recognition process, it must face the entire code area of ​​the two-dimensional code to be recognized, so the requirements for recognition are also high, and the hardware used for scanning is also high, so the cost is relatively high high

Images