简易人脸识别

import cv2 as cv

image=cv.imread("E:\\python\\timg.jpg",1)

#使用级联分类器对人脸进行训练和检测
face_engine=cv.CascadeClassifier("E:\\python\\haarcascade_frontalface_default.xml")

#捕获所有人脸轮廓，返回人脸轮廓的坐标以及宽度和高度
faces=face_engine.detectMultiScale(image, scaleFactor=1.2, minNeighbors=5)

#用矩形将人脸轮廓框起来
for (x,y,w,h) in faces:
    img=cv.rectangle(image,(x,y),(x+w,y+h),(255,0,0),3)
cv.imshow("image",img)