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<t>Hi,<br/> <br/> in a project we're tracking four people (full body) for a real-time application. On each person we've mounted 6 rigid bodies (all in all 24 individual 3 marker trackables). The capture volume is approx. 4x4 metres and 15 Optitrack V100r2 cameras have been mounted at 3 and 4 metres ...

Try using a carpet if you're on a hardwood or plastic floor. Reflections from other cameras' lights can be reflected by the floor and cause strange reflections by the feet.

Kahl

Thanks alot, it makes perfect sense and works just fine.

If you're ever in Stockholm, I'll buy you a beer =)

Kahl

<t>Does anyone know how I can project a point, using the quaternions of the rigid body (trackable)? The point is statically offset relative to the rigid body. <br/> <br/> I.e., a rigid body is defined, and from the rigid body a point is projected with the coordinates x=1, y=0 and z=0. When the rigid...

Looking at questions asked in the forum I guess that I am not the only one with problems and unanswered questions here...

I would greatly appreciate some documentation or specifications on the rotation orders of YPR and quaternions.


Kahl Hellmer

<t>I find that switching between left- and right handed coordinate system in Tracking Tools works just fine too, but for some reason, no matter what I set in Tracking Tools calibration, I always get left-handed coordinates when I call updateTrackableLocation() and TT_FrameMarkerX-Z(). It doesn't mat...

You can also use the TT_TrackableMarker() information with the TT_TrackableLocation() and calculate where the markers "should" be. Its probably more CPU-friendly, but might not be suitable. I guess that what you described would be the correct way.

Kahl

<t>I cannot seem to make use of the (very important) function TT_IsTrackableTracked(). Everything else in the API works just fine - but when I try to call TT_IsTrackableTracked() I get an error LNK2001 when I compile. Libraries are properly added. Has anyone else encountered this problem? I'm using ...

<t>Ok, thanks. Then I'll do it the hard way for now..<br/> <br/> It would help me alot if the API had a function that takes a rigid body index and a marker index as input and returns the marker position (not from definition, but the tracked position). Also, the possibility to explicitly index or set...

<t>..a question about real-time tracking of a specific marker in a tracked rigid body. What would be the easiest/CPU-friendliest way of finding this marker? In a way - what I am looking for is a function like TT_TrackableMarker() for the tracked rigid body and not the rigid body definition.<br/> <br...