树莓派与运动装置的交互

# coding:utf-8import cv2import picameraimport picamera.arrayimport mathimport numpy as npimport zmqimport timeport = '5556'context = zmq.Context()socket = context.socket(zmq.PUB)def main():   with picamera.PiCamera() as camera:      with picamera.array.PiRGBArray(camera) as stream:         camera.resolution = (320, 240)         while True:            camera.capture(stream, 'bgr', use_video_port=True)            image = stream.array            msg = function(img)            #上述的camera为我们摄像头捕捉到的视频流。            # 我们的所有处理可以在上述图像的基础之上            socket.send(msg)            # 然后利用socket.send（）信息回驱动装置