Ask Your Question

Point cloud Data analysis from ROS bag - Info required.

asked 2017-06-28 11:43:09 -0500

vrosuser gravatar image

I am asking for information on how to proceed. I am fairly new to ROS environment.

I have ROS bag recorded data with point cloud topics (x,y,z,velocity,intensity). I have to perform analysis on this data.

  • First I have to extract Only the point cloud topics from Rosbag. Any suggestions on how to achieve this ?

  • Second take the extracted point cloud topics and be able to either plot or graph (x,y,z,velocity,intensity). Any suggestion on which software/language/platform is best to achieve this. ?

Appreciate all the help I can get here.

edit retag flag offensive close merge delete

1 Answer

Sort by ยป oldest newest most voted

answered 2017-06-28 13:16:18 -0500

velveteenrobot gravatar image

Check out the rosbag Code APIs. This will allow you to isolate messages from specific topics from the rosbag.

You can use either C++ or Python to process your rosbags and point clouds. I'm not familiar with getting velocity or intensity data from PointCloud2 messages but in general I find that if you want more than x,y,z data from the point clouds then it's better to use C++. The Python API for accessing point clouds data is more limited. Check out the Point Cloud Library (PCL) for processing point clouds.

edit flag offensive delete link more


Thank you in pointing me to right direction.

vrosuser gravatar image vrosuser  ( 2017-06-29 08:05:07 -0500 )edit

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

Question Tools



Asked: 2017-06-28 11:43:09 -0500

Seen: 1,708 times

Last updated: Jun 28 '17