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Proceedings Paper

Some problems encountered in the development of a virtual reality system for evaluating human performance during emergency power-off aircraft landings
Author(s): David F. McAllister; Bradley Edward Morris; Kris Matson; Richard Christopher Hogan; Donald H. Mershon; Celeste Marie Mayer; Ray Lim; Michael Holmes; Jay Tomlinson
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Paper Abstract

A flight simulator was developed for studying the behavior of pilots in power-off aircraft landing situations. The simulation environment includes a 5-meter hemispherical dome in which the authors have installed a cockpit from a Cessna aircraft. The dome manufacturers provided their version of OPEN GL 1.1. The graphics rendering software has undergone constant modification because of computer and projection hardware changes and a lack of knowledge and understanding of the manufacturer's undocumented version of OPEN GL. The development team was led to believe that real time rendering of photographic quality images from 3D models was possible using the existing hardware and software. This was not true even for very simple environments. Flat surfaces must undergo major tessellation to project correctly on a hemispherical dome. The number of polygons to be rendered is increased by orders of magnitude. The tessellation also reverses some depth relationships, which causes parts of objects to disappear and reappear during the simulation. In addition, aliasing artifacts are severe because of the limited resolution and lack of antialiasing capabilities of the hardware. The authors document their experiences and their solutions to some of the rendering problems encountered.

Paper Details

Date Published: 22 June 2001
PDF: 10 pages
Proc. SPIE 4297, Stereoscopic Displays and Virtual Reality Systems VIII, (22 June 2001); doi: 10.1117/12.430847
Show Author Affiliations
David F. McAllister, North Carolina State Univ. (United States)
Bradley Edward Morris, North Carolina State Univ. (United States)
Kris Matson, North Carolina State Univ. (United States)
Richard Christopher Hogan, North Carolina State Univ. (United States)
Donald H. Mershon, North Carolina State Univ. (United States)
Celeste Marie Mayer, North Carolina State Univ. (United States)
Ray Lim, North Carolina State Univ. (United States)
Michael Holmes, North Carolina State Univ. (United States)
Jay Tomlinson, North Carolina State Univ. (United States)


Published in SPIE Proceedings Vol. 4297:
Stereoscopic Displays and Virtual Reality Systems VIII
Mark T. Bolas; Andrew J. Woods; Mark T. Bolas; John O. Merritt; Stephen A. Benton, Editor(s)

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