python2和python3 calibratecamera

calibResult = cv2.calibrateCamera(
                objpoints, imgpoints, (imW, imH),
                flags = cv2.cv.CV_CALIB_FIX_PRINCIPAL_POINT | 
                        cv2.cv.CV_CALIB_FIX_ASPECT_RATIO | 
                        cv2.cv.CV_CALIB_ZERO_TANGENT_DIST | 
                        cv2.cv.CV_CALIB_FIX_K1 | 
                        cv2.cv.CV_CALIB_FIX_K2 | 
                        cv2.cv.CV_CALIB_FIX_K3)

calibResult = cv2.calibrateCamera(
                objpoints, imgpoints, (imW, imH), None, None, 
                flags = cv2.CALIB_FIX_PRINCIPAL_POINT | 
                        cv2.CALIB_FIX_ASPECT_RATIO | 
                        cv2.CALIB_ZERO_TANGENT_DIST | 
                        cv2.CALIB_FIX_K1 | 
                        cv2.CALIB_FIX_K2 | 
                        cv2.CALIB_FIX_K3)