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ros-perception / ar_track_alvar

AR tag tracking library for ROS
www.ros.org/wiki/ar_track_alvar
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PCL Errors #38

Closed ljarin closed 7 years ago

ljarin commented 7 years ago

I get back markers pretty well, but I am getting these error messages:

[pcl::SampleConsensusModel::getSamples] Can not select 0 unique points out of 0!
[pcl::RandomSampleConsensus::computeModel] No samples could be selected!
[pcl::SACSegmentation::segment] Error segmenting the model! No solution found.

Any idea why PCL is throwing these?

I am using ubuntu 14.04, ros-indigo, with pcl and ar_track_alvar installed from binaries (I tried building both from source as well, but it made no difference).

130s commented 7 years ago

Quick Googling shows many threads from PCL-related websites, so I'd say this issue isn't even remotely rooted in ar_track_alvar so closing the ticket.

If you still think this needs discussed on ar_track_alvar, please feel free to reopen, but with more info. Maybe providing a .bag file where we can reproduce the issue (be sure to include the image topics you supply to ar_track_alvar).

ljarin commented 7 years ago

I guess I assumed that it must be rooted in however ar_track_alvar uses the pcl API (if at all)? The only other thing I have launched is the freenect kinect driver. The errors only occur when an AR tag is in the frame.

I just realized it is the same as this comment, though. https://github.com/ros-perception/ar_track_alvar/issues/35#issuecomment-297682755

Either way, never mind, I just wanted to see if anyone else experienced a similar problem, which I did not find on google.