Design and Implementation of High-Capacity Colorful QR Code with Multi-Code Combination

Compared with the traditional QR code, the color QR code has the outstanding advantages of large information capacity, ease of implementation, multi-code integration, etc. Therefore, it has been generally valued at home and abroad, and various color QR codes have been developed. In this paper, based on the needs of multi-code integration, automatic identification, anti-counterfeiting traceability, and other functional applications, a new color QR code is designed according to the basic principle of QR code grey threshold discrimination reading. Adopts the printing CMYK four-color information loading and grey scale segmentation method, which has the outstanding advantages of multi-code composite, both plain code and hidden codes, universal decoding function, and anti-counterfeiting traceability. Through experimental tests, the color QR code can read the plain code by direct code scanning, and can further read or authorize to read 1-2 hidden codes by app or mini program, which can be used to meet the requirements of printing anti-counterfeiting labels, traceability of commodity information and other fields, and has a good value of promotion and application.