Latency and Distortion of Electromagnetic Trackers for Augmented Reality Systems Paperback / softback
by Henry Himberg, Yuichi Motai
Part of the Synthesis Lectures on Algorithms and Software in Engineering series
Paperback / softback
Description
Augmented reality (AR) systems are often used to superimpose virtual objects or information on a scene to improve situational awareness.
Delays in the display system or inaccurate registration of objects destroy the sense of immersion a user experiences when using AR systems.
AC electromagnetic trackers are ideal for these applications when combined with head orientation prediction to compensate for display system delays.
Unfortunately, these trackers do not perform well in environments that contain conductive or ferrous materials due to magnetic field distortion without expensive calibration techniques.
In our work we focus on both the prediction and distortion compensation aspects of this application, developing a "small footprint" predictive filter for display lag compensation and a simplified calibration system for AC magnetic trackers.
In the first phase of our study we presented a novel method of tracking angular head velocity from quaternion orientation using an Extended KalmanFilter in both single model (DQEKF) and multiple model (MMDQ) implementations.
In the second phase of our work we have developed a new method of mapping the magnetic field generated by the tracker without high precision measurement equipment.
This method uses simple fixtures with multiple sensors in a rigid geometry to collect magnetic field data in the tracking volume.
We have developed a new algorithm to process the collected data and generate a map of the magnetic field distortion that can be used to compensate distorted measurement data.
Table of Contents: List of Tables / Preface / Acknowledgments / Delta Quaternion Extended Kalman Filter / Multiple Model Delta Quaternion Filter / Interpolation Volume Calibration / Conclusion / References / Authors' Biographies
Information
-
Out of stock
- Format:Paperback / softback
- Pages:173 pages, XV, 173 p.
- Publisher:Springer International Publishing AG
- Publication Date:05/06/2014
- Category:
- ISBN:9783031003943
Other Formats
- PDF from £25.49
- Paperback / softback from £27.15
Information
-
Out of stock
- Format:Paperback / softback
- Pages:173 pages, XV, 173 p.
- Publisher:Springer International Publishing AG
- Publication Date:05/06/2014
- Category:
- ISBN:9783031003943
