opencv+python 人脸识别

首先下载opencv的data，里面包含了很多现成的文件。

然后把两个文件添加到py程序目录下

haarcascade_frontalface_default.xml

haarcascade_eye.xml


然后贴代码（抄的）

# -*- coding: utf-8 -*
import numpy as np
import cv2

face_cascade = cv2.CascadeClassifier('haarcascade_frontalface_default.xml')

eye_cascade = cv2.CascadeClassifier('haarcascade_eye.xml')

cap = cv2.VideoCapture(0)

while True:
    ret,img = cap.read()
    gray = cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)
    faces = face_cascade.detectMultiScale(gray,1.3,5)
    for (x,y,w,h) in faces:
        cv2.rectangle(img,(x,y),(x+w,y+h),(255,0,0),2)
        roi_gray = gray[y:y+h,x:x+w]
        roi_color = img[y:y+h,x:x+w]
        eyes = eye_cascade.detectMultiScale(roi_gray)
        for(ex,ey,ew,eh) in eyes:
            cv2.rectangle(roi_color,(ex,ey),(ex+ew,ey+eh),(0,255,0),2)

    cv2.imshow('img',img)
    k = cv2.waitKey(30) & 0xff
    if k == 27:
        break

cap.release()
cv2.destroyAllWindows()

请忽略我30块摄像头的渣像素