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GPU implementation of 3D object selection by conic volume techniques in virtual environments

Tobias Rick, Anette von Kapri, Torsten Kuhlen
Virtual Reality Group JARA, RWTH Aachen University, Aachen, Germany
IEEE Virtual Reality Conference (VR), 2010

@inproceedings{rick2010gpu,

   title={GPU implementation of 3D object selection by conic volume techniques in virtual environments},

   author={Rick, T. and von Kapri, A. and Kuhlen, T.},

   booktitle={Virtual Reality Conference (VR), 2010 IEEE},

   pages={243–246},

   organization={IEEE},

   year={2010}

}

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In this paper we present a GPU implementation to accurately select 3D objects based on their silhouettes by a pointing device with six degrees of freedom (6DOF) in a virtual environment (VE). We adapt a 2D picking metaphor to 3D selection in VE’s by changing the projection and view matrices according to the position and orientation of a 6DOF pointing device and rendering a conic selection volume to an off-screen pixel buffer. This method works for triangulated as well as volume rendered objects, no explicit geometric representation is required.
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