Camera Lag

Technical Java
1

I’m having a hard time reducing the amount of lag i get from live camera feed. I have tried messing with compression and resolution but i still have like a 5 secound lag.

The following code, writen in Java, is the example dashboard code with camera feed added, i put my additions, camera feed code, in blue.

package edu.wpi.first.wpilibj.templates;

import edu.wpi.first.wpilibj.AnalogModule;
import edu.wpi.first.wpilibj.Dashboard;
import edu.wpi.first.wpilibj.DigitalModule;
import edu.wpi.first.wpilibj.DriverStation;
import edu.wpi.first.wpilibj.DriverStationLCD;
import edu.wpi.first.wpilibj.IterativeRobot;
import edu.wpi.first.wpilibj.Jaguar;
import edu.wpi.first.wpilibj.Solenoid;
import edu.wpi.first.wpilibj.Watchdog;
import edu.wpi.first.wpilibj.camera.AxisCamera;

/**

  • The VM is configured to automatically run this class, and to call the
  • functions corresponding to each mode, as described in the IterativeRobot
  • documentation. If you change the name of this class or the package after
  • creating this project, you must also update the manifest file in the resource
  • directory.
    */

/*This Dashboard example has been modified to

  • output camera feed on the driver station

  • –Mark Tutkowski–
    /
    public class DashBoardExample extends IterativeRobot {
    /    *

    • This function is run when the robot is first started up and should be

    • used for any initialization code.
      */
      public void robotInit() {
      AxisCamera.getInstance().writeResolution(AxisCamera.ResolutionT.k160x120);
      AxisCamera.getInstance().writeBrightness(0);

      Watchdog.getInstance().setEnabled(false); }

    /**

    • This function is called periodically during autonomous
      */
      public void autonomousPeriodic() {
      //Update Camera Feed
      DriverStationLCD.getInstance().updateLCD();
      }

    /**

    • This function is called periodically during operator control
      */
      public void teleopPeriodic() {
      //Update Camera Feed
      DriverStationLCD.getInstance().updateLCD();
      updateDashboard();

    }

Theres a little bit more code but the rest of it is not related to the camera.

Is there anyway to reduce the lag.

2

Try this: