Title :
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
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;
Conference_Titel :
Virtual Reality Annual International Symposium, 1995. Proceedings.
Conference_Location :
Research Triangle Park, NC
Print_ISBN :
0-8186-7084-3
DOI :
10.1109/VRAIS.1995.512494
