Ultrasonic calibration of a magnetic tracker in a virtual reality space

Author

Ghazisaedy, Morteza ; Adamczyk, David ; Sandin, Daniel J. ; Kenyon, Robert ; DeFanti, Thomas A.

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Illinois Univ., Chicago, IL, USA

fYear

1995

fDate

11-15 Mar 1995

Firstpage

179

Lastpage

188

Abstract

This paper describes a system for calibrating the position component of a 6-degree-of-freedom magnetic tracker by comparing the output with a custom-built ultrasonic measuring system. A look-up table, created from the collected difference data, is used to interpolate for corrected values. The error of the resulting corrected magnetic tracker position is measured to be less than 5% over the calibrated range

Keywords

calibration; interpolation; table lookup; tracking; ultrasonic measurement; user interfaces; virtual reality; 6-degree-of-freedom magnetic tracker; CAVE; calibrated range; corrected magnetic tracker position; custom-built ultrasonic measuring system; difference data; interpolation; look-up table; magnetic tracker; ultrasonic calibration; virtual reality space; Calibration; Coils; Couplings; Extraterrestrial measurements; Position measurement; Pulse measurements; Transmitters; Ultrasonic variables measurement; Virtual reality; Visualization;

fLanguage

English

Publisher

ieee

Conference_Titel

Virtual Reality Annual International Symposium, 1995. Proceedings.

Conference_Location

Research Triangle Park, NC

Print_ISBN

0-8186-7084-3

Type

conf

DOI

10.1109/VRAIS.1995.512494

Filename

512494