A.cv2.resize(img,(200,200))B.cv2.resize(img,None,fx=0.5,fy=0.5)C.cv2.pyrUp(img)D.cv2.pyrDown(img)
A.cv2.imread(’image.jpg’,cv2.IMREAD_GRAYSCALE)B.img =cv2.imread(’image.jpg’,0)C.img =cv2.imread(’image.jpg’,cv2.COLOR_BGR2GRAY)D.img =cv2.imread(’image.jpg’,cv2.IMREAD_COLOR)
A.cv2.findChessboardCorners()B.cv2.calibrateCamera()C.cv2.solvePnP()D.cv2.stereoCalibrate()