A geometric comparison of algorithms for fusion control in stereoscopic HTDs

This paper concerns stereoscopic virtual reality displays in which the head is tracked and the display is stationary, attached to a desk, tabletop or wall. These are called stereoscopic HTDs (head-tracked displays). Stereoscopic displays render two perspective views of a scene, each of which is seen...

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Vydané v:IEEE transactions on visualization and computer graphics Ročník 8; číslo 2; s. 129 - 143
Hlavní autori: Wartell, Z., Hodges, L.F., Ribarsky, W.
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: New York IEEE 01.04.2002
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Predmet:
Application software
Displays
Fusion power generation
Head
Humans
Image generation
Image shifting
Interactive
Layout
Rendering (computer graphics)
Separation
Stereoscopic
Three dimensional
Virtual reality
Visual system
ISSN:1077-2626, 1941-0506
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Shrnutí:This paper concerns stereoscopic virtual reality displays in which the head is tracked and the display is stationary, attached to a desk, tabletop or wall. These are called stereoscopic HTDs (head-tracked displays). Stereoscopic displays render two perspective views of a scene, each of which is seen by one eye of the user. Ideally, the user's natural visual system combines the stereo image pair into a single, 3D perceived image. Unfortunately, users often have difficulty fusing the stereo image pair. Researchers use a number of software techniques to reduce fusion problems. This paper geometrically examines and compares a number of these techniques and reaches the following conclusions: In interactive stereoscopic applications, the combination of view placement, scale, and either false eye separation or /spl alpha/-false eye separation can provide fusion control that is geometrically similar to image shifting and image scaling. However, in stereo HTDs, image shifting and image scaling also generate additional geometric artifacts that are not generated by the other methods. We anecdotally link some of these artifacts to exceeding the perceptual limitations of human vision. While formal perceptual studies are still needed, geometric analysis suggests that image shifting and image scaling may be less appropriate than the other methods for interactive, stereo HTDs.
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ISSN:1077-2626
1941-0506
DOI:10.1109/2945.998666