PT3 format

[spaceapple]

Hi Forum.
We're using the optitrack for facial mocap in our company and we're happy with it. Thanks guys.

Sometimes however, I would just just to get the raw 3D coordinates of the points recorded by Arena, which is painfull to decode from C3D or FBX files.

I guess the pt3 files we can save after a capture session hold that information. Is there a documentation somewhere describing the pt3 format so I can read 3D coordinates from my pt3 files ?

Thanks
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Nicolas

[VincentG]

The pt3 file itself is a proprietary OptiTrack format for the 3d data and isn't accessible outside of the Arena software. We are investigating the possibility of a CSV export option, but have no solid plans for that yet.

[spaceapple]

Oh ok...
So there no chance of getting the raw 3D point coordinates other than dealing with the C3D or FBX files I guess, right ?

That's for the answer.
--
Nicolas

[morgan]

Hey Nicolas,

The NatNet SDK has example programs that receive the data streaming from Arena and write it out as an ascii text file.

If you have a developer at your company they could use this as a workaround for you.

Morgan

[spaceapple]

Oh ok. Didn't think of that, but it could be a good workaround indeed.
Thank you Morgan for the tip

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Nicolas