Recognize and decode QR codes from images*

As digital technologies gain space in our daily lives, the use and recognition of QR codes becomes more and more important. This technical article examines the process of recognizing and decoding QR codes from images, with particular regard to innovative image processing methods. At the beginning, we review the history, structure and areas of application of QR codes. After that, we present the basics of image processing and the various techniques used to recognize QR codes, including image preprocessing, code location, segmentation, perspective correction, and decoding.This technical article summarizes and interprets research results and developments in the field of QR code recognition and is a useful resource for researchers, developers, and industry professionals interested in QR code technologies.