DetectColor.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import json
import picamera
import requests
import tempfile
import time

url = "https://api.projectoxford.ai/vision/v1/analyses?Color"
headers = {'Ocp-Apim-Subscription-Key': "INPUT YOUR API KEY HERE"}
camera = picamera.PiCamera()
camera.video_stabilization = True
LastColor = None
while True:
    f = tempfile.NamedTemporaryFile(delete=True, suffix='.jpg', prefix='camera')
    camera.capture(f.name)
    files = {'file': open(f.name, 'rb')}
    r = requests.post(url, files=files, headers=headers)
    data = json.loads(r.text)
    color = data["color"]["dominantColorBackground"]
    if (color != LastColor):
        print(u"报警！");
    LastColor = color
    time.sleep(1)