[人脸识别]07-视频输入人脸检测

1-程序

#导入CV模块

import cv2 as cv

def face_detect_fun(img):
    gray=cv.cvtColor(img,cv.COLOR_BGR2GRAY)
    print(cv.data.haarcascades)
    face_detect=cv.CascadeClassifier(cv.data.haarcascades+"haarcascade_frontalface_default.xml")
    face=face_detect.detectMultiScale(gray)

    for x,y,w,h in face:
        cv.rectangle(img,(x,y),(x+w,y+h),color=(0,0,255),thickness=2)
    cv.imshow("result",img)

#读取摄像头
cap=cv.VideoCapture(0)

#//WSN定位技术.mp4
#cap=cv.VideoCapture('WSN定位技术.mp4')
#等待
while True:
    flag,frame=cap.read()
    if not flag:
        break

    face_detect_fun(frame)

    if ord('q')==cv.waitKey(0):
        break


#释放内存
cv.destroyAllWindows()

#释放摄像头
cap.release()

2-运行效果