Use nodejs and python build a remote monitoring system 2. The master programming

Use nodejs python and remote monitoring system 1. Construction of a video capture module

Nodejs written using python and build a remote monitoring system module 3.web

Screen capture module After completion, start writing Screen dispatcher and the master control program

1. distributor (currently using UDP protocol, TCP can later be extended to support a distribution agreement supports HD video transmission)

#encoding=utf-8
import socket
import cv2
import numpy
from io import BytesIO
from utils import IOUtil,logger
from PIL import Image
from settings import *
import time
'''
传递者模块,用于分发需要散布的信息
'''
class Dispatcher(object):
    #信息分发器,用于将信息分发到指定的ip和端口上
    def __init__(self):
        #初始化udp socket
        self._sock = socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
        self.fileName = 0
        logger.info("分发器初始化完毕")
    def dispenseImage(self,frame,address):
        #分发图片到指定的地址
    	if frame is None:
        	return
    	try:
            #将brg图像转化为rgb图像,工具类中有封装
    		self._sock.sendto(IOUtil.array_to_bytes(frame[...,::-1]),address)
    	except Exception as e:
    		logger.error("分发器错误:"+str(e))
    def dispenseCommand(self,command,address):
    	if command is None:
        	return
    	try:
    		self._sock.sendto(bytes(command),address)
    	except Exception as e:
    		raise Exception(e)
    def close(self):
    	self._sock.close()

2. The preparation of the master program, python multi-threading module can not be optimized CPU-intensive tasks, but in the latter part of the program will be used to optimize multi-process, it now uses a similar multi-threaded mode

#encoding=utf-8
import cv2
from managers import CameraManager
from transmitters import Dispatcher
from threading import Thread
from settings import *
import time
import copy
import multiprocessing
from utils import IOUtil,logger
'''
主控程序
'''
class Camera(object):
    #主控程序
    def __init__(self,captureManager = None,dispatcher = None,isShow=True):
        '''
        :param captureManager: 视屏采集器
        :param dispatcher:信息分发器
        '''
        logger.info("主控程序初始化...")
        self.captureManager = captureManager if captureManager is not None else CameraManager(cv2.VideoCapture(0))
        self.dispatcher = dispatcher if dispatcher is not None  else Dispatcher()
        #是否开启图像分发
        self.isDispense = True
        #是否在本地显示
        self.isShow = isShow
        #是否开启预警
        self.isWarning = True
        #item为预警器处理后的图像以及坐标信息
        #原始图像
        self.frame = None
        logger.info("主控程序初始化完毕...")
    def _dispatch(self):
        #信息分发线程
        logger.info("是否开启图片分发:"+str(self.isDispense))
        while self.isDispense:
            try:
                self.dispatcher.dispenseImage(self.frame,(IMAGE_IP,IMAGE_PORT))
            except EOFError as e:
                print(e)
    def run(self):
        logger.info("\n################################################################")
        self.startDispatch()
        self.captureManager.start()
        time.sleep(1)
        while self.captureManager.isWorking():
            self.frame = self.captureManager.getFrame()

            if self.frame is None:
                continue
            if self.isShow and self.frame is not None:
                cv2.imshow("show",self.frame)
                keycode = cv2.waitKey(1)
                self.onKeypress(keycode)
    def startDispatch(self):
        #开启分发
        logger.info("开启分发")
        Thread(target=self._dispatch,args=()).start()
    def onKeypress(self,keycode):
        #按钮回调函数
        if keycode == 32:
            #空格键截图
            self.captureManager.writeImage()
        elif keycode == 9:
            #tab键开启录像
          if not self.captureManager.isWritingVideo():
              self.captureManager.startWritingVideo()
          else:
              self.captureManager.stopWritingVideo()
        elif keycode == 27:
            #esc键结束应用
            self.isDispense = False
            self.captureManager.stop()
            self.dispatcher.close()
            self.isWarning= False
if __name__=="__main__":
    Camera().run()

Screen capture end module, python modules completed so far