A server that returns the number of people in front of the camera with bottle.py and OpenCV

Last time I tried calling a Java program from bottle.py, but when accessed with a browser by the same method, I wrote a server that acquires a webcam image, recognizes a face image with OpenCV and returns the number of people in front of the camera saw.

Last time I wrote it in Python3, but this time it's Python2.7 and it's awkward to write import cv, cv2. .. ..

from bottle import route, run, template
import cv,cv2
import time

@route('/cv')
def index():
    cnt = 0
    cap = cv2.VideoCapture(0)
    time.sleep(0.1)
    ret,im = cap.read()
    cv2.imwrite("camera.jpg ",im)
    cap.release()
    cascade = cv.Load("haarcascade_frontalface_default.xml")
    cvim = cv.LoadImage("camera.jpg ")
    faces = cv.HaarDetectObjects(cvim, cascade, cv.CreateMemStorage())
    for (x,y,w,h),n in faces:
        cnt = cnt + 1
        cv.Rectangle(cvim, (x,y), (x+w,y+h), 255)
    cv.SaveImage('dst.jpg',cvim)
    return template('{{cnt}}', cnt=cnt)
run(host='127.0.0.1', port=8080)

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