This paper presents a new system for tridimensional virtual drawing relying on an infrared pen observed by a number of surrounding cameras. Nintendo wiimotes are used as cameras to provide reliable real-time tracking information. Since 3D triangulation requires the pen to be visible from at least 2 cameras, which highly constrains the field of view, we support many wiimotes for accurate reconstruction over a large space, while providing maximum movement flexibility to a performer. The paper focus on the calibration of multi-wiimotes setups and accurate 3D reconstruction of trajectories. Tested with up to 6 wiimotes and used in real performance context, the system provides both accurate 3D tracking and great performance flexibility.
Lucie Bélanger and Sébastien Roy, Virtual 3D drawing tool for stage performances, Proc. Virtual Reality International Conference, avril 2009