ROS与duckietbot指南-相机
ROS与duckietbot指南-相机
说明:
- 介绍如何使用相机
步骤:
需要ssh远程登录树莓派,打开两个终端
终端1:
$ cd ~/duckietown
$ source environment.sh
$ roslaunch duckietown camera.launch veh:=robot name
- 红灯亮起,不报红字错
- 效果:
...
[INFO] [1502539383.948237]: [/robot name/camera_node] Initialized.
[INFO] [1502539383.951123]: [/robot name/camera_node] Start capturing.
[INFO] [1502539384.040615]: [/robot name/camera_node] Published the first image.
- 终端2:
$ cd ~/duckietown
$ source environment.sh
- 查看话题:
$ rostopic list
- 效果:
/robot name/camera_node/camera_info
/robot name/camera_node/image/compressed
/robot name/camera_node/image/raw
/rosout
/rosout_agg
- 查看发布频率:
$ rostopic hz /robot name/camera_node/image/compressed
- 效果:
average rate: 30.016
min: 0.026s max: 0.045s std dev: 0.00190s window: 841
- 查看话题内容:
$ rostopic echo /robot name/camera_node/image/compressed
参考:
- http://book.duckietown.org/master/duckiebook/read_camera_data.html#sec:read-camera-data
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