Method and equipment for identifying two-dimension code

Abstract

The invention provides a method and equipment for identifying a two-dimension code, and relates to the field of an image identifying technique. The equipment is capable of improving the accuracy rate of a location detection graph for locating the two-dimension code, so as to improve the success rate of identifying the two-dimension code. The method comprises the steps of determining n centers of gravity of n first areas, wherein n first areas are overlapped areas of a horizontal area and a vertical area in a two-dimension code image to be identified, the horizontal area is an area of which the proportion of the width of a black area to the width of a white area in the horizontal area is a first preset proportion, and the vertical area is an area of which the proportion of the width of a black area to the width of a white area in the vertical area is the area of the first preset proportion; determining the center of gravity of the location detection graph in n centers of gravity; detecting the center of gravity of the location detection graph of the two-dimension code as a first seed point for region growing, so as to form an area where the two-dimension code is; and obtaining the information of an image where the two-dimension code is. The method is applied to a two-dimension code identifying system.

Description

technical field [0001] The invention relates to the technical field of image recognition, in particular to a method and equipment for recognizing two-dimensional codes. Background technique [0002] A two-dimensional code (English: 2-dimensional bar code) is a barcode that uses black and white images to record data symbol information. The black and white images are composed of specific geometric figures distributed on a plane according to certain rules. Generally speaking, the method for identifying a two-dimensional code may include: determining the area where the two-dimensional code is located, correcting the image in the area, and decoding the corrected image to obtain the information recorded by the two-dimensional code, namely Get information about the image for the region. [0003] In the traditional method, the area where the two-dimensional code is located is determined by locating the position detection pattern in the two-dimensional code. Wherein, each two-dimen...

AI Technical Summary

Problems solved by technology

[0004] However, since the area where the two-dimensional code is located or the background area of ​​the area where the two-dimensional code is located may also have an area where the width of the black area and the width of the white area in the horizontal and vertical directions satisfy the ratio of 1:1:3:1:1, Therefore, if the above method is used to determine the area where the two-dimensional code is located, the located area may not be the position detection pattern of the two-dimensional code, that is, the determined position detection pattern of the two-dimensional code is wrong, resulting in the scanning device according to the error. The location of the two-dimensional code determined by the position detection pattern is incorrect, which leads to the inability to obtain the information recorded by the two-dimensional code, which leads to the failure of the two-dimensional code recognition

Images