Marker Positions from Arena or Tracking Tools

NatNet, VRPN, TrackD, and Plugins
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BernhardSp
Posts: 10
Joined: Mon Apr 07, 2008 8:11 am

Marker Positions from Arena or Tracking Tools

Post by BernhardSp » Wed Jul 07, 2010 7:52 am

Hi,
Is there a way to stream individual marker positions from Arena or Tracking tools via NatNet or VRPN.
The problem we are trying to solve is to compute the distance between two markers (we only need 2 markers, no body suit or rigid bodies involved)
We tried receiving the marker data from Arena 1.6 by using the latest NatNet SDK. Unfortunately Arena doesn't seem to send marker data when there are only 2 markers.
Is there any NaturalPoint software that we could use to stream the positions of the two markers. Or is the only solution to write our own camera calibration code to receive the marker positions?

Many thanks,
Bernhard

VincentG
Posts: 7728
Joined: Mon Jul 17, 2006 5:00 am
Location: Corvallis, Oregon

Re: Marker Positions from Arena or Tracking Tools

Post by VincentG » Wed Jul 07, 2010 1:57 pm

At least one rigid body or skeleton needs to be loaded before ARENA will trajectorize untracked 3D markers.

Untracked 3D marker locations in 3DOF (X, Y, Z) physical coordinates, can be streamed using the Tracking Tools software.

http://www.naturalpoint.com/optitrack/p ... rison.html

Diana Nowacka
Posts: 5
Joined: Wed Aug 11, 2010 5:24 am

Re: Marker Positions from Arena or Tracking Tools

Post by Diana Nowacka » Wed Aug 25, 2010 4:11 am

Hello,
is there a possibility to track only one marker with the Tracking Tool? Or has it to be at least two markers to get real-time info?
Thanks.
Diana

VincentG
Posts: 7728
Joined: Mon Jul 17, 2006 5:00 am
Location: Corvallis, Oregon

Re: Marker Positions from Arena or Tracking Tools

Post by VincentG » Wed Aug 25, 2010 3:06 pm

Untracked 3D marker locations in 3DOF (X, Y, Z) physical coordinates, can be streamed using the Tracking Tools software. (not part of a cluster

wakabeast
Posts: 4
Joined: Wed May 18, 2011 10:45 am

Re: Marker Positions from Arena or Tracking Tools

Post by wakabeast » Mon May 30, 2011 12:43 pm

I just want to get something straight about the difference between Tracking Tools and Arena. Can Arena do everything tracking tools can do in terms of streaming live and exporting data about a rigid body? But from the comparison chart Arena can't track live or export data on single marker postions?

One of my projects is to track the motion of a canoe paddle and/or pendulum. I currently have Arena.

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