Confusingly, although the computer visualisation package is known (and imported) using the cv2 name, the library itself is called opencv-python, not cv2. Install the packagesįirst, open a Jupyter notebook and install the OpenCV computer visualisation package using !pip install opencv-python. In this project, I’ll show you how you can develop a Python QR code reader to read the QR code shown on images of Covid 19 tests to extract the unique reference code for the kit issued using the OpenCV computer visualisation library. QR codes are popular because they are fast to read, have a higher storage capacity than typical UPC barcodes, and include built in error checking. By scanning the QR code, scientists can quickly extract the unique code number embedded in the QR code in a reliable manner and import it directly into a database or other application. Most recently, you’ll probably have noticed QR codes on the fronts of lateral flow tests for Covid 19. Create a QR code that includes those infos, as an easy way to read them off a smartphone. Hi Sarah, do you have a code that use esp32 cam as qr code scanner and send. QR codes started to become popular in warehousing, marketing, and other areas in the early 2010s and the technology to read them is now built into the cameras of pretty much every smartphone. Read infos from a text file or database 2. You can watch the video tutorial or keep reading this page for the written. There are many types of QR Code scanning apps available for your smartphone that you can download from the app store. Point2 = tuple(bbox1])Ĭv2.The QR code or Quick Response code is a two-dimensional or matrix barcode invented in the early nineties by a Japanese car manufacturer. N_lines = len(bbox)#Cause bbox = ]], we need to convert fload into int and loop over the first element of arrayībox1 = bbox.astype(int) #Float to Int conversion Img = cv2.imread(filename, 0)# Zero means grayscaleĭata, bbox, straight_qrcode = tectAndDecode(img) #in case if QR code is not black/white it is better to convert it into grayscale from fpdf import FPDF from pystrich.datamatrix import DataMatri圎ncoder, DataMatrixRenderer Define the properties of the barcode positionX 10 positionY 10. Note that, when passing the points from the vertices array, we need to convert them to tuples. If your phone does not support native QR Code scanning, you can download a QR Code scanner app to read the QR Code. fpdf2 can be combined with the pystrich library to generate DataMatrix barcodes: pystrich generates pilimages, which can then be inserted into the PDF file via the FPDF.image () method.
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