Compensation for end to end delays in a VR system

Author

Akatsuka, Yuichiro ; Bekey, George A.

Author_Institution

Robotics Res. Lab., Univ. of Southern California, Los Angeles, CA, USA

fYear

1998

fDate

18-18 1998

Firstpage

156

Lastpage

159

Abstract

In virtual reality applications, time delay is one of the essential factors which need compensation. We measured the end to end time delay of our system and developed a compensation technique using a head motion model and a predictive Kalman filter. Compared to a previously developed predictive filter with a model free approach, our filter reduces the error, by 20 to 30%. Due to recent advances in PC technology, it was possible to implement the entire system (including the compensation) on a single PC. Our system consists of a PC, head mounted display, and a 6 degrees of freedom magnetic tracking sensor.

Keywords

Kalman filters; computer displays; delays; errors; magnetic sensors; user interfaces; virtual reality; 6 DOF magnetic tracking sensor; compensation; end to end delays; error; head motion model; head mounted display; model free approach; personal computer; predictive Kalman filter; six degree of freedom magnetic tracking sensor; time delay; virtual reality; Delay effects; Displays; Filters; Magnetic heads; Magnetic sensors; Magnetic separation; Motion measurement; Predictive models; Time measurement; Virtual reality;

fLanguage

English

Publisher

ieee

Conference_Titel

Virtual Reality Annual International Symposium, 1998. Proceedings., IEEE 1998

Conference_Location

Atlanta, GA, USA

Print_ISBN

0-8186-8362-7

Type

conf

DOI

10.1109/VRAIS.1998.658484

Filename

658484