Autocalibration for virtual environments tracking hardware

We describe two instances in which precise mechanical calibration of virtual environments equipment has been replaced by automated algorithmic calibration through software that encapsulates the hardware design and uses a goal-based approach to adjust calibration parameters. We describe a back-projection system for adjusting the assumed locations of beacons in a head-mounted display tracking system; the calculated errors in the navigation system are used to compute adjustments to the beacon positions to reduce such errors. In a second application, a piggyback headtracking/hand-tracking system is calibrated by a similar reduction of computed errors. CR Categories: I.3.m [Computer Graphics]: Miscellaneous; I.3.7 [Computer Graphics]: 3-dimensional Graphics and Realism — Virtual Reality; I.4.8 [Image Processing] Scene Analysis — Photometry

• Type: Conference
• Year: 1993
• Where: SIGGRAPH
• Authors: Stefan Gottschalk, John F. Hughes
• Keywords: Automated Algorithmic Calibration, Computer Graphics, Precise Mechanical Calibration, SIGGRAPH 1993