Detailed description
I try to create a QR code and decode that using cv2. The tutorials says the exact same below but I could not reproduce the code.
The problem persists for both small and large data. I looked any tutorials but any does not work. I have attached a small code for your information.
Thank you
Steps to reproduce
import cv2 import qrcode import matplotlib.pyplot as plt
Create a QR code
test = “Hello World”
qr = qrcode.QRCode( version=None, error_correction=qrcode.constants.ERROR_CORRECT_L, box_size=5, border=1, )
qr.add_data(test) qr.make(fit=True) img = qr.make_image(fill_color=“white”, back_color=“black”) img.save(“test.png”)
plot the generated QR code
im = plt.imread(“test.png”) implot = plt.imshow(im)
Read and Decode the QR code
img = cv2.imread(“test.png”) qcd = cv2.QRCodeDetector() retval, decoded_info, points, straight_qrcode = qcd.detectAndDecodeMulti(img) print(retval)
Output: False
They said , I need to add margin offset to generated QR code. But none of th tutorial says to add margin and I donot know how to add margin.
Thank you
