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- Publisher Website: 10.1068/p240315
- Scopus: eid_2-s2.0-0029187713
- PMID: 7617432
- WOS: WOS:A1995QX96700005
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Article: Perceiving heading in the presence of moving objects.
Title | Perceiving heading in the presence of moving objects. |
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Authors | |
Issue Date | 1995 |
Publisher | Pion Ltd.. The Journal's web site is located at http://www.perceptionweb.com |
Citation | Perception, 1995, v. 24 n. 3, p. 315-331 How to Cite? |
Abstract | In most models of heading from optic flow a rigid environment is assumed, yet humans often navigate in the presence of independently moving objects. Simple spatial pooling of the flow field would yield systematic heading errors. Alternatively, moving objects could be segmented on the basis of relative motion, dynamic occlusion, or inconsistency with the global flow, and heading determined from the background flow. Displays simulated observer translation toward a frontal random-dot plane, with a 10 deg square moving independently in depth. The path of motion of the object was varied to create a secondary focus of expansion (FOE') 6 deg to the right or left of the actual heading point (FOE), which could bias the perceived heading. There was no effect when the FOE was visible, but when the object moved in front of it, perceived heading was biased toward the FOE' by approximately 1.9 degrees with a transparent object, and approximately 3.4 degrees with an opaque object. The results indicate that scene segmentation does not occur prior to heading estimation, which is consistent with spatial pooling weighted near the FOE. A simple template model based on large-field, center-weighted expansion units accounts for the data. This may actually represent an adaptive solution for navigation with respect to obstacles on the path ahead. |
Persistent Identifier | http://hdl.handle.net/10722/168915 |
ISSN | 2023 Impact Factor: 1.6 2023 SCImago Journal Rankings: 0.584 |
ISI Accession Number ID |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Warren Jr, WH | en_US |
dc.contributor.author | Saunders, JA | en_US |
dc.date.accessioned | 2012-10-08T03:39:37Z | - |
dc.date.available | 2012-10-08T03:39:37Z | - |
dc.date.issued | 1995 | en_US |
dc.identifier.citation | Perception, 1995, v. 24 n. 3, p. 315-331 | en_US |
dc.identifier.issn | 0301-0066 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/168915 | - |
dc.description.abstract | In most models of heading from optic flow a rigid environment is assumed, yet humans often navigate in the presence of independently moving objects. Simple spatial pooling of the flow field would yield systematic heading errors. Alternatively, moving objects could be segmented on the basis of relative motion, dynamic occlusion, or inconsistency with the global flow, and heading determined from the background flow. Displays simulated observer translation toward a frontal random-dot plane, with a 10 deg square moving independently in depth. The path of motion of the object was varied to create a secondary focus of expansion (FOE') 6 deg to the right or left of the actual heading point (FOE), which could bias the perceived heading. There was no effect when the FOE was visible, but when the object moved in front of it, perceived heading was biased toward the FOE' by approximately 1.9 degrees with a transparent object, and approximately 3.4 degrees with an opaque object. The results indicate that scene segmentation does not occur prior to heading estimation, which is consistent with spatial pooling weighted near the FOE. A simple template model based on large-field, center-weighted expansion units accounts for the data. This may actually represent an adaptive solution for navigation with respect to obstacles on the path ahead. | en_US |
dc.language | eng | en_US |
dc.publisher | Pion Ltd.. The Journal's web site is located at http://www.perceptionweb.com | en_US |
dc.relation.ispartof | Perception | en_US |
dc.subject.mesh | Analysis Of Variance | en_US |
dc.subject.mesh | Discrimination (Psychology) | en_US |
dc.subject.mesh | Humans | en_US |
dc.subject.mesh | Kinesthesis - Physiology | en_US |
dc.subject.mesh | Models, Biological | en_US |
dc.subject.mesh | Motion Perception - Physiology | en_US |
dc.subject.mesh | Multivariate Analysis | en_US |
dc.subject.mesh | Perceptual Distortion | en_US |
dc.subject.mesh | Visual Fields | en_US |
dc.title | Perceiving heading in the presence of moving objects. | en_US |
dc.type | Article | en_US |
dc.identifier.email | Saunders, JA:jsaun@hkucc.hku.hk | en_US |
dc.identifier.authority | Saunders, JA=rp00638 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1068/p240315 | - |
dc.identifier.pmid | 7617432 | - |
dc.identifier.scopus | eid_2-s2.0-0029187713 | en_US |
dc.identifier.volume | 24 | en_US |
dc.identifier.issue | 3 | en_US |
dc.identifier.spage | 315 | en_US |
dc.identifier.epage | 331 | en_US |
dc.identifier.isi | WOS:A1995QX96700005 | - |
dc.publisher.place | United Kingdom | en_US |
dc.identifier.scopusauthorid | Warren Jr, WH=34573732800 | en_US |
dc.identifier.scopusauthorid | Saunders, JA=7402341514 | en_US |
dc.identifier.issnl | 0301-0066 | - |