mkdir -p ~/turtlebot3_ws/src/ cd ~/turtlebot3_ws/src/ 这三个链接内容不好下载，这里放上： git clone https://github.com/ROBOTIS-GIT/turtlebot3_simulations.git git clone https://github.com/ROBOTIS-GIT/turtlebot3_msgs.git git clone https://github.com/ROBOTIS-GIT/turtlebot3.git

使用turtlebot3的ros包，通过自己在urdf中在turtle前端添加相机，利用opencv在gazebo中实现巡线，并实时显示相机视野并且把道路处理结果显示，适合学生作业。