projection - Compute 3D marker coordinates from 2D positions (Motion Capture) -

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i hoping out there may able me out problem having motion capture system. looking stream real-time xyz marker positions matlab online processing; however, have real-time access 2d marker positions seen each camera (8 cameras in total). markers located on human subject moving relatively within capture volume.

i have been racking brains, , exhausting google, stackoverflow, , multiple view geometry text answer question:

can reproject 2d marker positions 3d space if know precisely projection matrices of each camera? or, still bound triangulate corresponding 2d points between camera views obtain xyz position of marker?

i really really hope can obtain 3d marker coordinates knowing 2d positions seen given camera, , projection (intrinsic+extrinsic) matrix - doubtful...

i appreciate in advance! cheers!

yes! can obtain 3d position of marker number of 2d positions. track-it-yourself open-source library hosted @ google code. allow compute 3d position 2 2d markers.


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