forums.naturalpoint.com

Is it possible to manually assign marker labels to my pointcloud, alter or otherwise change a marker's label in Arena?

The problem Im having is the pt2 data for a take is actually very clean, and has few gaps. All markers are solidly reconstructed when playing back in edit mode. However, once I trajectorize the data, and create a pt3 from the take, I lose lots of points, and the tracking goes way off, relative to my skeleton. Does Arena delete trajectories it considers to be spurious automaticlly? Is there a way to keep them and manually assign a marker label to them once I have a pt3 file?

Cheers
Gary

Gary,

Please send a copy of your the pt2 file, skeleton and tpose(pt2) (and any rigid body definitions) you are having trouble with to support@naturalpoint.com. Having the data to review will make it easier to provide feedback and advice.

Birch, this has actually been a big concern of mine for some time as well. Trajectorization strips out point cloud data that's unlabeled. But that data could very easily be cleaned up externally if it would just survive the trajectorization and make its way out of the system via the c3d file export. The way it is currently, there is no road for manual intervention before Arena automatically strips the point cloud data based on its best guess (which is never going to be perfect). I really do despise the data loss.

Brad:

Point taken. This sort of goes with the feature request to track individual markers, even if their labels change with occlusion. So, we will do this in the future, probably as an optional setting.