A recognition method for stacked two-dimensional codes with logo icons

Abstract

The invention provides a stacked QR code fused with a logo icon. The stacked QR code fused with a logo icon includes an upper code region layer and a lower logo icon layer, wherein the code region layer includes a plurality of code regions which are arranged in an equivalent matrix manner; each code region includes matrix-arranged identification units of a plurality of lines and a plurality of rows, and in the same code region, a line of blank unit is arranged between every adjacent two lines of identification units, and a row of blank unit is arranged between every adjacent two rows of identification units; each blank unit is a 3*3 module formed by white modules; each identification unit is 3*3 modules formed by black modules and white modules, and the 3*3 modules of the identification unit include 2 black modules and 7 white modules; two black modules in the same identification unit are separated by the distance of at least one white module; and a four-bit binary string is correspondingly stored in each identification unit. The invention also provides an identification method of the stacked QR code fused with a logo icon, improving the identification rate.

Description

technical field [0001] The invention relates to two-dimensional code technology, in particular to a method for recognizing a stacked two-dimensional code combined with a logo icon. 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), 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. The code includes a positioning part for positioning and a data part for storing information, but the existing matrix two-dimensional code has dense color blocks, so if you want to display it with a logo icon, you need to display it in the two-dimensional code Dig out a blank area and display the logo icon in the blank area, so that the logo icon is compr...

AI Technical Summary

Problems solved by technology

At present, most common two-dimensional codes are matrix codes (such as DM codes and QR codes), 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. The code includes a positioning part for positioning and a data part for storing information, but the existing matrix two-dimensional code has dense color blocks, so if you want to display it with a logo icon, you need to display it in the two-dimensional code Dig out a blank area and display the logo icon in the blank area, so that the logo icon is compressed very small, not easy to recognize, and the visual effect is poor, and the QR code is also due to its uneven color block density, so you need to choose one The code area is placed in an independent, clean and flat area, which is greatly affected by the environment. For example, the position of the code scan directly affects the angle of light, etc. Therefore, the user needs to go to a specific location to scan the code, and the code scanning operation is limited.

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