Comment by Martin Günther for Check the NTP synchronization between the...
Thanks, we'll check the NTP synchronization too and report back here. This looks promising.
View ArticleAnswer by jbohren for A PR2 I've been working with a while ago has the...
Check the NTP synchronization between the computers involved in the ROS graph. Sometimes this can cause problems when TF transforms pointcloud data from a quickly moving source.
View ArticleComment by Martin Günther for I've had this problem for a long time, even on...
Thanks, we'll try upping the z_threshold filtering. It's rather a workaround than a solution, but it should work. I don't think the pr2_local_nav parameters have anything to do with it, because the...
View ArticleAnswer by Lorenzo Riano for A PR2 I've been working with a while ago has the...
I've had this problem for a long time, even on flat surfaces. Many people have reported the same. There are two approaches you can follow: - Use dynamic_reconfigure and change some of the parameters...
View ArticleComment by weiin for Note: solved, see update at the endI've found the root...
of course, i understand the PR2 tilt laser isn't used primarily for long range navigation since it has the base laser. but I'm just wondering if only one tilt laser is sufficient to do both navigation...
View ArticleComment by Martin Günther for Note: solved, see update at the endI've found...
@weiin: I think if you're interested in that, it would be best to open a new question (link to this one if it's relevant).
View ArticleComment by weiin for Note: solved, see update at the endI've found the root...
According to the laser filter wiki http://www.ros.org/wiki/laser_filters/Tutorials/Laser%20filtering%20using%20the%20filter%20nodes#All_in_One_Node:_scan_to_cloud_filter_chain this "offset feature"...
View ArticleComment by Lorenz for Note: solved, see update at the endI've found the root...
The sac_ground_removal node and the whole laser pipeline seems to be pretty out-dated. I guess the only node that hasn't been ported to PCL. In the parsec repo you can find a re-implementation...
View ArticleComment by Martin Günther for Note: solved, see update at the endI've found...
Thank you Lorenz, I wasn't aware of that! For the moment I hope that I have found the solution, but if I have to dig deeper, it's good to know there's a better/cleaner alternative to the laser pipeline.
View ArticleAnswer by Martin Günther for A PR2 I've been working with a while ago has the...
*Note: solved, see update at the end* I've found the root of the problem. This seems to be a bug in `laser_filters`. I tried reproducing this in Gazebo to rule out hardware problems, and this is what I...
View ArticleComment by Dan Lazewatsky for A PR2 I've been working with a while ago has...
I don't have a solution but I can tell you that I've seen similar behavior on multiple other PR2s.
View ArticlePR2 sees ghost obstacles in tilting laser
A PR2 I've been working with a while ago has the problem that the tilting laser reports erroneous obstacles to the right and left of the robot, which leads to "ghost obstacles" and messes up...
View Article
