基于opencv+python的人脸识别

# -*-coding=utf-8-*-
# 时间:2021/4/6;17:33
# 编写人:刘钰琢
import cv2 as cv
#import numpy as np
#from matplotlib import pyplot as plt
def face_detect_demo(src):
    gray=cv.cvtColor(src,cv.COLOR_BGR2GRAY)
    face_detector=cv.CascadeClassifier('C:\\opencv\\opencv\\sources\\data\\haarcascades\\haarcascade_frontalface_default.xml')
    faces=face_detector.detectMultiScale(gray,scaleFactor=1.1,minNeighbors=3)
    for x,y,w,h in faces:
        cv.rectangle(src,(x,y),(x+w,y+h),color=(0,0,255),thickness=2)
        cv.circle(src,center=(x+w//2,y+h//2),radius=w//2,color=(0,225,0),thickness=2)
    cv.imshow('result',src)
cap=cv.VideoCapture(0)
while True:
    flag,frame=cap.read()
    print(flag,frame.shape)
    face_detect_demo(frame)
    cv.imshow('result',frame)
    if ord('q')==cv.waitKey(0):
        break
cv.destroyAllWindows()
cap.release()