The detect() method from this class is used to scan the image for QR codes it finds the box that contains the QR code. We can scan single and multiple QR codes using different methods. This class contains methods that can be used to detect and scan images for QR codes. Version 4.0.0 of the OpenCV library introduced the QRCodeDetector class. Use the QRCodeDetector Class to Create a QR Code Scanner Using OpenCV in Python We can apply a wide range of pre-defined techniques in our frames. The OpenCV library contains different functionalities and classes that can store and process images efficiently. This tutorial will demonstrate how to create a QR code scanner using the OpenCV library in Python. There is an application for the QR code scanner in almost every phone nowadays. This information can be URLs, contacts, and other information up to four thousand characters. It stores data in two directions hence it can contain more information than barcodes. QR codes have the edge over traditional barcodes in terms of storage. It is also based on Morse code, so it can be considered a type of matrix of barcodes. QR codes are stored in a box and are represented using a combination of black and white squares with some dots. In recent times, QR Codes have also gained popularity. Based on the Morse code, Barcodes store information by representing it using lines and spaces and store the data horizontally. We are all familiar with barcodes that are present in different products. Use the QRCodeDetector Class to Create a QR Code Scanner Using OpenCV in Python.
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