cd ./usr_ws/src
mkdiir yolov3 donload the yolov3 file into the folder
https://drive.google.com/drive/folders/1KbRX_Higs7eB6CetXGlN34g02-iEfkRW?usp=sharing
cd ./usr_ws catkin_mkae
turn on the webots simulator
rosrun yolov3 detection_demo.py rosrun robot_arm main.py