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Correction techniques for depth errors with stereo three-dimensional graphic displaysThree-dimensional (3-D), 'real-world' pictorial displays that incorporate 'true' depth cues via stereopsis techniques have proved effective for displaying complex information in a natural way to enhance situational awareness and to improve pilot/vehicle performance. In such displays, the display designer must map the depths in the real world to the depths available with the stereo display system. However, empirical data have shown that the human subject does not perceive the information at exactly the depth at which it is mathematically placed. Head movements can also seriously distort the depth information that is embedded in stereo 3-D displays because the transformations used in mapping the visual scene to the depth-viewing volume (DVV) depend intrinsically on the viewer location. The goal of this research was to provide two correction techniques; the first technique corrects the original visual scene to the DVV mapping based on human perception errors, and the second (which is based on head-positioning sensor input data) corrects for errors induced by head movements. Empirical data are presented to validate both correction techniques. A combination of the two correction techniques effectively eliminates the distortions of depth information embedded in stereo 3-D displays.
Document ID
19930001982
Acquisition Source
Legacy CDMS
Document Type
Technical Publication (TP)
Authors
Parrish, Russell V. (NASA Langley Research Center Hampton, VA, United States)
Holden, Anthony (NASA Langley Research Center Hampton, VA, United States)
Williams, Steven P. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 6, 2013
Publication Date
October 1, 1992
Subject Category
Aircraft Design, Testing And Performance
Report/Patent Number
NAS 1.60:3244
ATCOM-TR-92-B-011
L-17045
NASA-TP-3244
Accession Number
93N11170
Funding Number(s)
PROJECT: RTOP 505-64-13-32
PROJECT: DA PROJ. 1L1-61102-AH-45
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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