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Accession Number N20120014276
Title Operationally Based Vision Assessment Simulator for Domes.
Publication Date Jun 2012
Media Count 10p
Personal Author J. Archdeacon J. Gaska S. Timoner
Abstract The Operational Based Vision Assessment (OBVA) simulator was designed and built by NASA and the United States Air Force (USAF) to provide the Air Force School of Aerospace Medicine (USAFSAM) with a scientific testing laboratory to study human vision and testing standards in an operationally relevant environment. This paper describes the general design objectives and implementation characteristics of the simulator visual system being created to meet these requirements. A key design objective for the OBVA research simulator is to develop a real-time computer image generator (IG) and display subsystem that can display and update at 120 frame s per second (design target), or at a minimum, 60 frames per second, with minimal transport delay using commercial off-the-shelf (COTS) technology. There are three key parts of the OBVA simulator that are described in this paper: (i) the real-time computer image generator, (ii) the various COTS technology used to construct the simulator, and (iii) the spherical dome display and real-time distortion correction subsystem. We describe the various issues, possible COTS solutions, and remaining problem areas identified by NASA and the USAF while designing and building the simulator for future vision research. We also describe the critically important relationship of the physical display components including distortion correction for the dome consistent with an objective of minimizing latency in the system. The performance of the automatic calibration system used in the dome is also described. Various recommendations for possible future implementations shall also be discussed.
Keywords Aerospace medicine
Commercial off-the-shelf products
Computer graphics
Domes(Structural forms)
Flight simulators
Image processing
Systems engineering
Technology assessment

Source Agency National Aeronautics and Space Administration
NTIS Subject Category 62A - Computer Hardware
51F - Test Facilities & Equipment
Corporate Author National Aeronautics and Space Administration, Moffett Field, CA. Ames Research Center.
Document Type Conference proceedings
Title Note N/A
NTIS Issue Number 1307
Contract Number NNA08AF13C

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