Title :
Calibrating an Optical See-Through Rig with Two Non-overlapping Cameras: The Virtual Camera Framework
Author :
Braux-Zin, Jim ; Bartoli, Adrien ; Dupont, Romain ; Vinciguerra, Régis
Author_Institution :
LIST, CEA, Gif-sur-Yvette, France
Abstract :
We present a novel extrinsic calibration method for optical see-through systems. It is primarily aimed at tablet-like systems with a semi transparent screen, a camera tracking the user position and another camera analyzing the scene but easily generalizable to any optical see-through setup. Relative poses of the cameras and the screen are all needed for proper alignment. The proposed algorithm is based on the user indicating the projections onto the screen of several reference points chosen on a known object. A convex estimation is computed through the resectioning of virtual cameras and used to initialize a global bundle adjustment. Both synthetic and real experiments show the viability of our approach.
Keywords :
calibration; estimation theory; object tracking; screens (display); transparency; video cameras; virtual reality; camera tracking; convex estimation; extrinsic calibration method; global bundle adjustment; nonoverlapping cameras; optical see-through rig; optical see-through setup; optical see-through systems; reference points; semitransparent screen; tablet-like systems; virtual camera framework; virtual cameras; Biomedical optical imaging; Calibration; Cameras; Equations; Estimation; Noise; Vectors; augmented reality; calibration; camera resectioning; optical see-through; virtual cameras;
Conference_Titel :
3D Imaging, Modeling, Processing, Visualization and Transmission (3DIMPVT), 2012 Second International Conference on
Conference_Location :
Zurich
Print_ISBN :
978-1-4673-4470-8
DOI :
10.1109/3DIMPVT.2012.43