capture aruco codes from webcam using opencv2

webcam_aruco_capture.py

import cv2
import cv2.aruco as aruco


markerSize = 4
totalMarkers=100
key = getattr(aruco, f'DICT_{markerSize}X{markerSize}_{totalMarkers}')
arucoDict = aruco.Dictionary_get(key)

def findArucoMarkers(img, draw=True):
    gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
    arucoParam = aruco.DetectorParameters_create()
    bboxs, ids, rejected = aruco.detectMarkers(gray, arucoDict, parameters = arucoParam)
    _bboxs, _ids, _rejected = aruco.detectMarkers(255-gray, arucoDict, parameters = arucoParam)
    if draw:
        cv2.aruco.drawDetectedMarkers(img, bboxs, ids)
        cv2.aruco.drawDetectedMarkers(img, _bboxs, _ids)
    return ids, _ids
  
# define a video capture object
vid = cv2.VideoCapture(0)
  
while(True):
      
    # Capture the video frame
    # by frame
    ret, frame = vid.read()
  
    # Display the resulting frame
    findArucoMarkers(frame)
    cv2.imshow('frame', frame)
    # the 'q' button is set as the
    # quitting button you may use any
    # desired button of your choice
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break
  
# After the loop release the cap object
vid.release()
# Destroy all the windows
cv2.destroyAllWindows()