| Angular frequency filtering: a basis for pattern decomposition. | |
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MedLine Citation:
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PMID: 2275904 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Much insight has been gained into the nature of early vision by postulating that the system encodes patterns by means of channels, or filters, tuned to specific orientations and spatial frequencies. We argue that a different decomposition, in terms of radially and rotationally symmetrical filters, is equally plausible, both in terms of the geometry of the eye and the ecology of visual pattern recognition. We demonstrate experimentally some of the properties of angular frequency filtering. |
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Authors:
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M L Simas; P C Dodwell |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Spatial vision Volume: 5 ISSN: 0169-1015 ISO Abbreviation: Spat Vis Publication Date: 1990 |
Date Detail:
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Created Date: 1991-03-04 Completed Date: 1991-03-04 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 8602662 Medline TA: Spat Vis Country: NETHERLANDS |
Other Details:
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Languages: eng Pagination: 59-74 Citation Subset: IM |
Affiliation:
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Laboratorio de Percepcao Visual, Universidade Federal de Pernambuco, Recife, PE, Brazil. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Contrast Sensitivity
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physiology Humans Pattern Recognition, Visual / physiology* Pilot Projects Psychophysics Visual Pathways / physiology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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