read_qrcode.py

import cv2


def read_qrcode():
    # initalize the cam
    cap = cv2.VideoCapture(0)
    # initialize the cv2 QRCode detector
    detector = cv2.QRCodeDetector()
    while True:
        _, img = cap.read()
        # detect and decode
        data, bbox, _ = detector.detectAndDecode(img)
        # check if there is a QRCode in the image
        # if bbox is not None:
        # display the image with lines
        # for i in range(len(bbox)):
        #     # draw all lines
        #     cv2.line(img, tuple(bbox[i][0]), tuple(bbox[(i+1) % len(bbox)][0]), color=(255, 0, 0), thickness=2)
        if data:
            print("[+] QR Code detected, data:", data)
        # display the result
        cv2.imshow("img", img)
        if cv2.waitKey(1) == ord("q"):
            break
    cap.release()
    cv2.destroyAllWindows()


def video_reader():
    cam = cv2.VideoCapture(0)
    detector = cv2.QRCodeDetector()
    print(detector)
    while cam:
        _, img = cam.read()
        data, bbox, _ = detector.detectAndDecode(img)
        if data:
            print("QR Code detected-->", data)
        cv2.imshow("img", img)
        if cv2.waitKey(1) == ord("Q"):
            break
    cam.release()
    cv2.destroyAllWindows()


# read_qrcode()
# video_reader()