# -*- coding: utf-8 -*-

"""

Created on Wed May 23 11:14:42 2018

@author: Administrator

"""

# 打开摄像头并灰度化显示

import cv2

capture = cv2.VideoCapture(0)

# OpenCV人脸识别分类器

classifier = cv2.CascadeClassifier( "D:\openvc\haarcascade_frontalface_default.xml" )

color = (0, 255, 0) # 定义绘制颜色

while(True):

# 获取一帧

ret, frame = capture.read()

# 将这帧转换为灰度图

gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

# 调用识别人脸

faceRects = classifier.detectMultiScale( gray, scaleFactor=1.2, minNeighbors=3, minSize=(32, 32))

for (x, y, w, h) in faceRects:

cv2.rectangle(gray, (x, y), (x + w, y + h), (255, 0, 0), 2)

cv2.imshow("frame", gray)

if cv2.waitKey(1) & 0xFF == ord('q'):

break

capture.release()

cv2.destroyAllWindows()