
import cv2
nba = cv2.imread('python.jpg')
# 人脸数据,级联分类器,给人脸特征数据,返回可以识别人脸的对象
detector = cv2.CascadeClassifier('haarcascade_frontalface_default.xml')
face_zone = detector.detectMultiScale(nba)
for x, y, w, h in face_zone:
cv2.rectangle(nba, pt1=(x, y), pt2=(x + w, y + h), color=[0, 0, 255])
cv2.imshow('nba', nba)
cv2.waitKey(0)
cv2.destroyAllWindows()



