博主是新手小白，所以该专栏名为“一起学ROS+AI”，本篇为此专栏第一篇，欢迎一起学习交流。
环境 ubuntu20.04+ros2 foxy
假设环境已经搭建好，以后再补上环境安装篇。
yolov8在ros2上github地址：
GitHub - mgonzs13/yolov8_ros: Ultralytics YOLOv8 for ROS 2
为了方便使用，fork到gitee，也可也使用下面这个链接：
https://gitee.com/chenjianbin0822/yolov8_ros
步骤：
1. source /opt/ros/foxy/setup.sh
2. 按照仓库Installation进行安装：
$ cd ~/ros2_ws/src $ git clone https://github.com/mgonzs13/yolov8_ros.git $ pip3 install -r yolov8_ros/requirements.txt $ cd ~/ros2_ws $ rosdep install --from-paths src --ignore-src -r -y $ colcon build
博主之前已经测试过，从以下开始
2.1. rosdep install --from-paths src --ignore-src -r -y
显示：#All required rosdeps installed successfully
2.2 colcon build
显示：
Starting >>> yolov8_ros
Starting >>> yolov8_msgs
Finished <<< yolov8_ros [1.98s]
Starting >>> yolov8_bringup
Finished <<< yolov8_bringup [5.05s]
Finished <<< yolov8_msgs [35.2s]
Summary: 3 packages finished [36.9s]
3. 执行：. install/setup.sh， 注意，有个”."符号
4. 启动人体关键点算法：
ros2 launch yolov8_bringup yolov8.launch.py model:=yolov8m-pose.pt
显示：
[INFO] [launch]: All log files can be found below YOURPATH/.ros/log/2023-12-16-11-19-34-170991-ubuntu2004-rdk-34339
[INFO] [launch]: Default logging verbosity is set to INFO
[INFO] [yolov8_node-1]: process started with pid [34341]
[INFO] [tracking_node-2]: process started with pid [34343]
[INFO] [debug_node-3]: process started with pid [34345]
成功加载起来，怎么测试，请听下回分解
