A Barcode Positioning and Recognition Method

Abstract

A barcode positioning and identification method, the barcode outermost is a black border, the width of the border is 0.5 unit length; ten square squares of equal size are evenly distributed in the black border, and the side length of each square square is 1 unit length, the vertical distance between each square and the border is 0.5 unit length; from left to right, the horizontal distance between the first square and the left side of the border is 0.5 unit length, the tenth The horizontal distance between a square square and the right side of the border is also 0.5 unit length, and the distance between the centers of two adjacent square squares is equal, both of which are 2 unit lengths; the length of the entire barcode is 21 unit lengths, The width is 3 units long. The invention designs a barcode and a corresponding recognition algorithm, which can quickly and effectively realize the recognition of the barcode, the location of the barcode and the judgment of the direction of the barcode.

Description

technical field [0001] The invention belongs to the fields of barcode positioning and barcode identification, and in particular relates to a barcode and its positioning and identification method. Background technique [0002] Barcodes are very common in people's daily life and are widely used in various occasions, for example: when shopping in a supermarket, the cashier identifies the product through the one-dimensional code on the product, and adds WeChat friends by scanning the WeChat QR code Wait, these are the most common applications of barcode recognition in daily life. There are two main types of barcodes: one-dimensional codes and two-dimensional codes. The one-dimensional code is composed of a set of regularly arranged bars, spaces and corresponding characters. The data composed of these bars and spaces expresses certain information, and can be read by specific equipment and converted into binary and decimal information compatible with computers. According to diff...

AI Technical Summary

Problems solved by technology

Although one-dimensional codes and two-dimensional codes have been widely used in many scenarios, due to the limitations of existing one-dimensional codes and two-dimensional codes, their application range will be limited, for example: according to an object The barcode pasted on the object realizes the type identification, position judgment and direction judgment of the object. At this time, the existing one-dimensional code and two-dimensional code are not easy to do

For one-dimensional codes, due to the limitation of one-dimensional code dimensions, one-dimensional codes can only be recognized in four horizontal or vertical directions, and cannot be recognized in any direction, and because one-dimensional codes have no obvious features, making it difficult to locate the one-dimensional code through the features of the one-dimensional code

Although the two-dimensional code can be recognized in any direction, the angle of the barcode is difficult to judge, and because the two-dimensional code is a square code, it is inconvenient to paste in some application environments

Images