A Geometric Comparison of Algorithms for Fusion Control in Stereoscopic HTDs

Wartell, Zachary Justin; Hodges, Larry F.; Ribarsky, William

Title:

A Geometric Comparison of Algorithms for Fusion Control in Stereoscopic HTDs

dc.contributor.author	Wartell, Zachary Justin
dc.contributor.author	Hodges, Larry F.
dc.contributor.author	Ribarsky, William
dc.date.accessioned	2004-10-07T12:49:38Z
dc.date.available	2004-10-07T12:49:38Z
dc.date.issued	2001
dc.description.abstract	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 Display). 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 ?-false eye separation can provide fusion control geometrically similar to image shifting and image scaling. However, in stereo HTDs image shifting and image scaling also generate additional geometric artifacts not generated by the other methods. We anecdotally link some of these artifacts to exceeding 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 for interactive, stereo HTDs than the other methods.	en
dc.format.extent	101291 bytes
dc.format.extent	2046216 bytes
dc.format.mimetype	application/pdf
dc.format.mimetype	application/pdf
dc.identifier.uri	http://hdl.handle.net/1853/3323
dc.language.iso	en_US
dc.publisher	Georgia Institute of Technology	en
dc.relation.ispartofseries	GVU Technical Report;GIT-GVU-01-08
dc.subject	Stereoscopic virtual reality displays	en
dc.subject	Stereoscopic HTDs	en
dc.subject	Head-tracked displays	en
dc.subject	Artifacts	en
dc.subject	Human vision	en
dc.subject	Image scaling	en
dc.subject	Image shifting	en
dc.title	A Geometric Comparison of Algorithms for Fusion Control in Stereoscopic HTDs	en
dc.type	Text
dc.type.genre	Technical Report
dspace.entity.type	Publication
local.contributor.corporatename	GVU Center
local.relation.ispartofseries	GVU Technical Report Series
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