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Conference Paper: Effects of motion parall\x and reference objects on heading perception during translation and rotation

TitleEffects of motion parall\x and reference objects on heading perception during translation and rotation
Authors
Issue Date1997
PublisherAssociation for Research in Vision and Ophthalmology. The Journal's web site is located at http://www.iovs.org
Citation
Association for Research in Vision and Ophthalmology 1997 Annual Meeting, Fort Lauderdale, Florida, 11-16 May 1997. In Investigative Ophthalmology And Visual Science, 1997, v. 38 n. 4, p. S79 How to Cite?
AbstractPurpose. Last year we reported that mean judgmenls of heading during simulated translation and rotation of the observe were accurate with displays of a complex texture-mapped scene (Warren et al., ARVO, 1996). Here ue investigate the information used in these judgments by nanipulating edge parallax, motion parallax, and the presence of reference objects. Methods. Subjects viewed live types of displays presenting observer translation wer a ground plane al 2 m/s: ( 1 ) Occluding tombstones on a textured ground plare; (2) Non-occluding posts on a tcxturcd ground plane; (3) Textured ground pkne alone; (4) Occluding tombsloncs alone; and (5) Non-occluding posts alone. In the simulated rotation condition, a fixation point at eye level remained stationary on the screen, and displays simulated optic flou at an eye rotation rate of 0 lo ±7 deg/;. In the actual rotation condition, subjects tracked a moving fixation point with the same rotation rate. They adjusted a probe at 10 m to indicate perceived heading. Ri suits, Mean heading error was small at all rotation rates when the densely text ired ground plane was present (providing differential motion and radial foreground flow), with or without added lombstones or posts. However, with tombstones ahme (providing edge parallax and reference objects) or posts alone (providing im lion parallax and reference objects), crroi increased substantially with rotation rate. Conclusions. A densely tcxturcd ground plane containing differential motion aid radial foreground flow is sufficient lor perceiving heading during simulated rotation. The pattern of results is reproduced in simulations of a heading model based on differential motion (Rieger & Lawton, 1985).
Persistent Identifierhttp://hdl.handle.net/10722/169012
ISSN
2015 Impact Factor: 3.427
2015 SCImago Journal Rankings: 2.008

 

DC FieldValueLanguage
dc.contributor.authorLi, Len_US
dc.contributor.authorWarren, WHen_US
dc.date.accessioned2012-10-08T03:40:45Z-
dc.date.available2012-10-08T03:40:45Z-
dc.date.issued1997en_US
dc.identifier.citationAssociation for Research in Vision and Ophthalmology 1997 Annual Meeting, Fort Lauderdale, Florida, 11-16 May 1997. In Investigative Ophthalmology And Visual Science, 1997, v. 38 n. 4, p. S79en_US
dc.identifier.issn0146-0404en_US
dc.identifier.urihttp://hdl.handle.net/10722/169012-
dc.description.abstractPurpose. Last year we reported that mean judgmenls of heading during simulated translation and rotation of the observe were accurate with displays of a complex texture-mapped scene (Warren et al., ARVO, 1996). Here ue investigate the information used in these judgments by nanipulating edge parallax, motion parallax, and the presence of reference objects. Methods. Subjects viewed live types of displays presenting observer translation wer a ground plane al 2 m/s: ( 1 ) Occluding tombstones on a textured ground plare; (2) Non-occluding posts on a tcxturcd ground plane; (3) Textured ground pkne alone; (4) Occluding tombsloncs alone; and (5) Non-occluding posts alone. In the simulated rotation condition, a fixation point at eye level remained stationary on the screen, and displays simulated optic flou at an eye rotation rate of 0 lo ±7 deg/;. In the actual rotation condition, subjects tracked a moving fixation point with the same rotation rate. They adjusted a probe at 10 m to indicate perceived heading. Ri suits, Mean heading error was small at all rotation rates when the densely text ired ground plane was present (providing differential motion and radial foreground flow), with or without added lombstones or posts. However, with tombstones ahme (providing edge parallax and reference objects) or posts alone (providing im lion parallax and reference objects), crroi increased substantially with rotation rate. Conclusions. A densely tcxturcd ground plane containing differential motion aid radial foreground flow is sufficient lor perceiving heading during simulated rotation. The pattern of results is reproduced in simulations of a heading model based on differential motion (Rieger & Lawton, 1985).en_US
dc.languageengen_US
dc.publisherAssociation for Research in Vision and Ophthalmology. The Journal's web site is located at http://www.iovs.orgen_US
dc.relation.ispartofInvestigative Ophthalmology and Visual Scienceen_US
dc.titleEffects of motion parall\x and reference objects on heading perception during translation and rotationen_US
dc.typeConference_Paperen_US
dc.identifier.emailLi, L:lili@hku.hken_US
dc.identifier.authorityLi, L=rp00636en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-33749097834en_US
dc.identifier.volume38en_US
dc.identifier.issue4en_US
dc.identifier.spageS79en_US
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridLi, L=26643188000en_US
dc.identifier.scopusauthoridWarren, WH=34573732800en_US
dc.customcontrol.immutablecsl 140811-

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