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Proceedings Paper

In-flight evaluation of an optical head motion tracker III
Author(s): Kazuho Tawada; Masakazu Okamoto
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Paper Abstract

We have presented a new approach for Optical HMT (Head Motion Tracker) past years [1]-[4]. In existing Magnetic HMT, it is inevitable to conduct pre-mapping in order to obtain sufficient accuracy because of magnetic field's distortion caused by metallic material around HMT, such as cockpit and helmet. Optical HMT is commonly known as mapping-free tracker; however, it has some disadvantages on accuracy, stability against sunlight conditions, in terms of comparison with Magnetic HMT. We had succeeded to develop new HMT system, which can overcome particular disadvantages by integration with two area cameras, optical markers, image processing techniques and inertial sensors with simple algorithm in laboratory level environment (2008). We have also reported some experimental results conducted in flight test, which proved good accuracy even in the sunlight condition (2009). We have also reported some experimental results conducted in flight test, which proved good performance even in the night flight (2010). Shimadzu Corp. and JAXA (Japan Aerospace Exploration Agency) are conducting joint research named SAVERH (Situation Awareness and Visual Enhancer for Rescue Helicopter) [2]-[4] that aims at inventing method of presenting suitable information to the pilot to support search and rescue missions by helicopters. The HMT system has been evaluated through a series of flight evaluation in SAVERH and demonstrated the operation concept. In this report, we show result of the final evaluation of the HMD system through 12 flights including night flight. Also, those evaluation was done by integrated HMT system that was newly developed for the tests in this year.

Paper Details

Date Published: 7 June 2011
PDF: 8 pages
Proc. SPIE 8041, Head- and Helmet-Mounted Displays XVI: Design and Applications, 80410I (7 June 2011); doi: 10.1117/12.883324
Show Author Affiliations
Kazuho Tawada, Shimadzu Corp. (Japan)
Masakazu Okamoto, Shimadzu Corp. (Japan)

Published in SPIE Proceedings Vol. 8041:
Head- and Helmet-Mounted Displays XVI: Design and Applications
Peter L. Marasco; Paul R. Havig, Editor(s)

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