6 May 2009 In-flight evaluation of an optical head motion tracker
Author Affiliations +
Abstract
We have presented a new approach for Optical HMT (Head Motion Tracker) last year (Proc. SPIE 6955, 69550A1-11, 2008) [1]. 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 have succeeded to develop new Optical HMT, which can overcome particular disadvantages by integration with two area cameras, LED markers, image processing techniques and inertial sensors with simple algorithm in laboratory level environment. We have also reported some experimental results conducted in laboratory, which proves good accuracy even in the sunlight condition. This time, we show actual performance of the Optical HMT in flight condition, including evaluation of stability against sunlight. Shimadzu Corp. and JAXA (Japan Aerospace Exploration Agency) is conducting joint research named SAVERH (Situation Awareness and Visual Enhancer for Rescue Helicopter) [2] that aims at inventing method of presenting suitable information to the pilot to support search and rescue missions by helicopters. The Optical HMT has been evaluated through a series of flight evaluation in SAVERH and demonstrated the operation concept.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kazuho Tawada, Kazuho Tawada, } "In-flight evaluation of an optical head motion tracker", Proc. SPIE 7326, Head- and Helmet-Mounted Displays XIV: Design and Applications, 73260L (6 May 2009); doi: 10.1117/12.818435; https://doi.org/10.1117/12.818435
PROCEEDINGS
10 PAGES


SHARE
RELATED CONTENT

Scorpion hybrid optical-based inertial tracker (HObIT)
Proceedings of SPIE (May 16 2013)
Human factors requirements of helmet trackers for HMDs
Proceedings of SPIE (September 08 2003)
A new optical HMT system based on image processing
Proceedings of SPIE (April 14 2008)
Miniature six-DOF inertial system for tracking HMDs
Proceedings of SPIE (August 11 1998)

Back to Top