import cv2 import numpy as np def detection_mask(img_path): face_cascade = cv2.CascadeClassifier('haarcascade_frontalface_default.xml') mouth_cascade = cv2.CascadeClassifier('haarcascade_mcs_mouth.xml') img = cv2.imread(img_path) gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY) faces = face_cascade.detectMultiScale(gray, 1.3, 5) mask_flag = True if len(faces) > 0: (x,y,w,h) = faces[0] #最初の一人 roi_gray