Emgu.CV.Capture.QueryGrayFrame C# (CSharp) Метод

      public virtual Image<Gray, Byte> QueryGrayFrame()
      {
         return Grab() ? RetrieveGrayFrame(0) : null;
      }

        private static void StartClient()
        {
            th_cli = new Thread (delegate() {
                try
                {
                    ConsoleAdditives.WriteHeader("Stream started");
                    Capture cap = new Capture();
                    while(_isRunning) {
                        byte[] buf = cap.QueryGrayFrame().Bytes;
                        int buflp = buf.Length/5;

                        for(byte i=0;i<5;i++)
                        {
                            byte[] tbuf = new byte[buflp];
                            tbuf[0]=i;
                            for(int j=1;j<buflp;j++)
                            {
                                tbuf[j]=buf[i*buflp+j];
                            }
                            client.Send(tbuf,buflp,remoteEP);
                        }
                    }
                    ConsoleAdditives.WriteHeader("Stream stoped");
                }
                catch(Exception ex)
                {
                    Console.WriteLine(ex.ToString());
                }

            });
            th_cli.Start ();
        }