P6【OpenCV人脸识别】

# -*- coding: utf-8 -*-
"""
Created on Fri Oct  1 23:17:07 2021

@author: 23608
"""
import numpy as np
import cv2

cap = cv2.VideoCapture(1) # 0一般都是你电脑内置的摄像头 1是外置摄像头

face_cascade = cv2.CascadeClassifier('C:/Program Files/Python38/Lib/site-packages/cv2/data/haarcascade_frontalface_default.xml')

while 1:# 1代表Ture 0代表False
    bool_value, frame = cap.read()
    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
    
    faces = face_cascade.detectMultiScale(frame)
    
    for (x,y,w,h) in faces:
        cv2.rectangle(frame, (x,y), (x + w, y + h), (0, 255, 0), 2)
        cv2.putText(frame, "face", (x, y), 3, 1.2, (255, 0, 0))
    cv2.imshow("frame", frame)
    # cv2.imshow("GRAY", gray)
    if cv2.waitKey(30) & 0xFF == ord('q'):
        break

cap.release()
cv2.destroyAllWindows()