| Generic and non-generic conditions for the perception of surface shape from texture. | |
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MedLine Citation:
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PMID: 11927349 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Li and Zaidi (Vision Research 40 (2000) 217; 41 (2001) 1519) have recently argued that there are two necessary conditions for the perception of 3D shape from texture: (1) the texture pattern must have a disproportionate amount of energy along directions of principal curvature; and (2) the surface must be viewed with a noticeable amount of perspective. In the present article we present evidence that these conclusions are only valid under a limited set of non-generic viewing conditions. Other relevant factors that need to be considered in this context include the distribution of curvature on an object's surface and the set of possible viewing directions from which it can be observed. For generic viewing directions and patterns of curvature, the perception of surface curvature from texture is only minimally affected by the orientation spectrum of the texture pattern or the amount perspective in its optical projection. Li and Zaidi (Vision Research 41 (2001) 1519) have also identified two characteristic patterns of image contours, which they claim to be the only possible source of information within textured images for determining the direction of surface slant or the sign of surface curvature. In the present article we attempt to show that these characteristic patterns can only arise in natural vision for a limited set of non-generic viewing directions. We also review several other factors that can influence the perceived direction of slant or the perceived sign of curvature, which have been identified previously by other investigators. |
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Authors:
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James T Todd; Augustinus H J Oomes |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Vision research Volume: 42 ISSN: 0042-6989 ISO Abbreviation: Vision Res. Publication Date: 2002 Mar |
Date Detail:
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Created Date: 2002-04-02 Completed Date: 2002-07-01 Revised Date: 2007-11-14 |
Medline Journal Info:
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Nlm Unique ID: 0417402 Medline TA: Vision Res Country: England |
Other Details:
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Languages: eng Pagination: 837-50 Citation Subset: IM |
Affiliation:
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Department of Psychology, 142 Townshend Hall, The Ohio State University, Columbus 43210, USA. todd.44@osu.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Form Perception* Humans Orientation Pattern Recognition, Visual* Photic Stimulation / methods Psychophysics |
| Grant Support | |
ID/Acronym/Agency:
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R01-EY12432/EY/NEI NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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