Date of Publication :7th June 2016
Abstract: This paper describes the design, development and testing of an AR system that was developed for aerospace and ground vehicles to meet stringent accuracy and robustness requirements. The system uses an optical see-through HMD, and thus requires extremely low latency, high tracking accuracy and precision alignment and calibration of all subsystems in order to avoid misregistration and “swim”. The paper focuses on the optical/inertial hybrid tracking system and describes novel solutions to the challenges with the optics, algorithms, synchronization, and alignment with the vehicle and HMD systems. Tracker accuracy is presented with simulation results to predict the registration accuracy. A car test is used to create a through-the-eyepiece video demonstrating well-registered augmentations of the road and nearby structures while driving. Finally, a detailed covariance analysis of AR registration error is derived.
Reference :
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1) E. Foxlin, “Head-tracking relative to a moving vehicle or simula-tor platform using differential inertial sensors,” presented at the Helmet HeadMounted Displays V, SPIE, AeroSense Symp., Orlando, FL, USA, Apr. 24–25, 2000.
2) E. Foxlin, T. Calloway, and H. Zhang, “Improved registration for vehicular AR using autoharmonization,” in Proc. IEEE/ACM Int. Symp. Mixed Augmented Reality, Munich, Germany, Sep. 2014, pp. 105–112.
3) T. A. Furness, “The super cockpit and human factors challenges,” in Proc. Human Factors Soc. 30th Annu. Meeting, 1986, pp. 48–52.
4) D. Wagner, G. Reitmayr, A. Mulloni, T. Drummond, and D. Schmalstieg, “Pose tracking from natural features on mobile phones,” in Proc. 7th IEEE/ACM Int. Symp. Mixed Augmented Reality, 2008, pp. 125– 134.
5) G. Welch, G. Bishop, L. Vicci, S. Brumback, K. Keller and D. Colluci, “High-performance widearea optical tracking: The hiball tracking system,” Presence: Teleoperators Virtual Environ., vol. 10, no. 1, pp. 1–21, 2001.
6) D. Roberts, A. Menozzi, J. Cook, T. Sherrill, S. Snarski, P. Russler, and G. Welch, “Testing and evaluation of a wearable augmented reality system for natural outdoor environments,” in Proc. SPIE Defense, Security, Sensing, Int. Soc. Opt. Photon., vol. 8735,p. 87350A, May 2013.
7) D. Titterton and J. Weston, Strapdown Inertial Navigation Technol-ogy, 2nd ed. Stevenage, U.K.: IET, Jan. 2004