roslaunch turtlebot3_gazebo turtlebot3_autorace_2020.launch
roslaunch turtlebot3_autorace_camera intrinsic_camera_calibration.launch
roslaunch turtlebot3_autorace_camera extrinsic_camera_calibration.launch mode:=calibration
rqt
选择plugins > visualization > Image view
创建两个窗口
rosrun rqt_reconfigure rqt_reconfigure