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Multi-scale keypoints in V1 and beyond: object segregation, scale selection, saliency maps and face detection

2006Journal article Open access
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dc.contributor.authorRodrigues, J. M. F.
dc.contributor.authordu Buf, J. M. H.
dc.date.accessioned2009-02-13T17:10:06Z
dc.date.available2009-02-13T17:10:06Z
dc.date.issued2006
dc.description.abstractEnd-stopped cells in cortical area V1, which combine outputs of complex cells tuned to different orientations, serve to detect line and edge crossings, singularities and points with large curvature. These cells can be used to construct retinotopic keypoint maps at different spatial scales (level-of-detail). The importance of the multi-scale keypoint representation is studied in this paper. It is shown that this representation provides very important information for object recognition and face detection. Different grouping operators can be used for object segregation and automatic scale selection. Saliency maps for focus-of-attention can be constructed. Such maps can be employed for face detection by grouping facial landmarks at eyes, nose and mouth. Although a face detector can be based on processing within area V1, it is argued that such an operator must be embedded into dorsal and ventral data streams, to and from higher cortical areas, for obtaining translation-, rotation- and scale-invariant detection.pt_PT
dc.identifier.citationBYOSYSTEMSByoSystems. - Ireland : Elsevier. - Vol. 86, nº. 1-3 (October - December 2006), p. 75-90pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.1/181
dc.language.isoengpt_PT
dc.publisherElsevierpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/2.0en
dc.subjectVisão computorizadapt_PT
dc.subjectCórtex visualpt_PT
dc.titleMulti-scale keypoints in V1 and beyond: object segregation, scale selection, saliency maps and face detectionpt_PT
dc.typejournal article
dspace.entity.typePublication
person.familyNameRodrigues
person.familyNamedu Buf
person.givenNameJoao
person.givenNameHans
person.identifier.ciencia-id8A19-98F7-9914
person.identifier.orcid0000-0002-3562-6025
person.identifier.orcid0000-0002-4345-1237
person.identifier.ridM-5125-2013
person.identifier.scopus-author-id55807461600
person.identifier.scopus-author-id6604075916
rcaap.rightsopenAccess
rcaap.typearticlept_PT
relation.isAuthorOfPublication683ba85b-459c-4789-a4ff-a4e2a904b295
relation.isAuthorOfPublicationcfad5636-2c77-4db0-a3a0-d7eb97ce6bee
relation.isAuthorOfPublication.latestForDiscovery683ba85b-459c-4789-a4ff-a4e2a904b295

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