Implementation of Python3 Remote Monitoring Program

Brief introduction

I started to think this was very interesting, and then I wanted to make one to play one

Language used: Python3

Tools: opencv Video Surveillance + socket Data Transmission Technology

Program verification: Here I consider 1, found that there is still no need to implement encapsulation into executable files. Let's just put the code. (Put the code first and explain it later.)

This procedure has been modified by myself to ensure that it can be used

Use requirements:

The Sender code must run on a computer with a camera. Then the data is encoded, compressed and transmitted to another computer

Reciever, as the receiver, has no special requirements.

Both computers must press numpy + opencv. (If you install it, there is one article in my opencv collection that writes about it.)

By the way, my receiver shutdown operation is (Esc in the input keyboard) so that you can exit the monitoring.

The sender can't turn off this monitoring

As for the setting of this IP address: I write the address of the receiver. The port is randomly set

Limitations:

At present, this program can only be monitored in real time in LAN.

Ideas for improvement:

If you want to expand into a wide area network. (You can use a server on a wide area network as a relay station)

Moreover, if one broiler can be found, the ip address of the corresponding monitoring object can be avoided by the above method

Code

Sender (sender code)

import socket
import struct
import time
import cv2
import numpy


class Config(object):
  def __init__(self):
    self.TargetIP = ('192.168.199.121', 6666)
    self.resolution = (640, 480) #  Resolution 
    self.img_fps = 15 # each second send pictures
    self.server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    self.server.connect(self.TargetIP)
    self.img = ''
    self.img_data = ''

  def RT_Image(self):
    camera = cv2.VideoCapture(0)
    img_param = [int(cv2.IMWRITE_JPEG_QUALITY), self.img_fps]

    while True:
      time.sleep(0.1) # sleep for 0.1 seconds
      _, self.img = camera.read()

      self.img = cv2.resize(self.img, self.resolution)

      _, img_encode = cv2.imencode('.jpg', self.img, img_param)
      img_code = numpy.array(img_encode)
      self.img_data = img_code.tostring() # bytes data
      try:

        packet = struct.pack(b'lhh', len(self.img_data), self.resolution[0],
                   self.resolution[1])
        self.server.send(packet)
        self.server.send(self.img_data)

      except Exception as e:
        print(e.args)
        camera.release()
        return


if __name__ == '__main__':
  config = Config()
  config.RT_Image()

Reciever recipient code:

import socket
import cv2
import struct
import numpy
import threading


class Camera_Connect_Object(object):
  def __init__(self, TargetIP=('', 6666)):
    self.TargetIP = TargetIP
    self.resolution = (640, 480)
    self.src = 888 + 15
    self.interval = 0
    self.img_fps = 15

    self.Server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    self.Server.bind(self.TargetIP)
    self.Server.listen(5)

  def RT_Image(self):
    self.client, self.addr = self.Server.accept()
    self.name = self.addr[0] + " Camera"
    print(self.name)
    while True:
      # time.sleep(0.3) # sleep for 0.3 seconds
      tempdata = self.client.recv(8)
      if len(tempdata) == 0:
        print("+1")
        continue
      info = struct.unpack('lhh', tempdata)
      buf_size = int(info[0])

      if buf_size:
        try:
          self.buf = b""
          self.temp_buf = self.buf
          while buf_size:
            self.temp_buf = self.client.recv(buf_size)
            buf_size -= len(self.temp_buf)
            self.buf += self.temp_buf
          data = numpy.fromstring(self.buf, dtype='uint8')

          self.image = cv2.imdecode(data, 1)
          cv2.imshow(self.name, self.image)
        except Exception as e:
          print(e.args)
          pass
        finally:
          if cv2.waitKey(10) == 27:
            self.client.close()
            cv2.destroyAllWindows()
            break

  def Get_data(self):
    showThread = threading.Thread(target=self.RT_Image)
    showThread.start()
    showThread.join()


if __name__ == '__main__':
  camera = Camera_Connect_Object()
  camera.Get_data()