Title :
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
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;
Conference_Titel :
Virtual Reality Annual International Symposium, 1998. Proceedings., IEEE 1998
Conference_Location :
Atlanta, GA, USA
Print_ISBN :
0-8186-8362-7
DOI :
10.1109/VRAIS.1998.658484
