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Hyperstereopsis in helmet-mounted NVDs : time to contact estimation

Flanagan, Patrick, Stuart, Geoffrey W. and Gibbs, Peter 2007, Hyperstereopsis in helmet-mounted NVDs : time to contact estimation, in SPIE 2007 : Head- and helmet-mounted displays XII : design and applications : 10-11 April, 2007, Orlando, Florida, USA, SPIE: The International Society for Optical Engineering, Washington, USA, pp. 1-7, doi: 10.1117/12.719115.

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Title Hyperstereopsis in helmet-mounted NVDs : time to contact estimation
Author(s) Flanagan, Patrick
Stuart, Geoffrey W.
Gibbs, Peter
Conference name Society of Photo-optical Instrumentation Engineers (2007 : Orlando, Florida)
Conference location Orlando, Florida
Conference dates 10-11 April 2007
Title of proceedings SPIE 2007 : Head- and helmet-mounted displays XII : design and applications : 10-11 April, 2007, Orlando, Florida, USA
Editor(s) Brown, Randall W.
Publication date 2007
Series Proceedings of SPIE--the International Society for Optical Engineering ; v. 6557
Start page 1
End page 7
Publisher SPIE: The International Society for Optical Engineering
Place of publication Washington, USA
Keyword(s) hyperstereopsis
night vision devices
helmet-mounted displays
time to contact
Summary The side mounting of the night-vision sensors on some helmet-mounted systems creates a situation of hyperstereopsis in which the binocular cues available to the operator are exaggerated such that distances around the point of fixation are increased. For a moving surface approaching the observer, the increased apparent distance created by hyperstereopsis should result in greater apparent speed of approach towards the surface and so an operator will have the impression they have reached the surface before contact actually occurs. We simulated motion towards a surface with hyperstereopsis and compared judgements of time to contact with that under normal stereopsis as well as under binocular viewing without stereopsis. We simulated approach of a large, random-field textured and found that time to contact estimates were shorter under the hyperstereoscopic condition than those under normal stereo and no stereo, indicating that hyperstereopsis may cause observers to underestimate time to contact leading operators to undershoot the ground plane when landing.
ISBN 9780819466792
0819466794
Language eng
DOI 10.1117/12.719115
Field of Research 170112 Sensory Processes, Perception and Performance
HERDC Research category E2 Full written paper - non-refereed / Abstract reviewed
Copyright notice ©2007, SPIE
Persistent URL http://hdl.handle.net/10536/DRO/DU:30014847

Document type: Conference Paper
Collection: School of Psychology
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