Optical flow by multi-scale annotated keypoints: A biological approach

Farrajota, Miguel; Rodrigues, J. M. F.; du Buf, J. M. H.

Publication

Optical flow by multi-scale annotated keypoints: A biological approach

2011Conference object

dc.contributor.author	Farrajota, Miguel
dc.contributor.author	Rodrigues, J. M. F.
dc.contributor.author	du Buf, J. M. H.
dc.date.accessioned	2011-12-07T09:56:07Z
dc.date.available	2011-12-07T09:56:07Z
dc.date.issued	2011
dc.date.updated	2011-12-05T17:17:56Z
dc.description.abstract	Optical flow is the pattern of apparent motion of objects in a visual scene and the relative motion, or egomotion, of the observer in the scene. In this paper we present a new cortical model for optical flow. This model is based on simple, complex and end-stopped cells. Responses of end-stopped cells serve to detect keypoints and those of simple cells are used to detect orientations of underlying structures and to classify the junction type. By combining a hierarchical, multi-scale tree structure and saliency maps, moving objects can be segregated, their movement can be obtained, and they can be tracked over time. We also show that optical flow at coarse scales suffices to determine egomotion. The model is discussed in the context of an integrated cortical architecture which includes disparity in stereo vision.	por
dc.identifier.citation	Farrajota, Miguel; Rodrigues, J.M.F.; J.M.H. du Buf. Optical flow by multi-scale annotated keypoints: A biological approach, Trabalho apresentado em BIOSIGNALS 2011, In Proc. Int. Conf. on Bio-inspired Systems and Signal Processing (BIOSIGNALS 2011), Rome, Italy, 2011.	por
dc.identifier.other	AUT: JRO00913; DUB00865;
dc.identifier.uri	http://hdl.handle.net/10400.1/891
dc.language.iso	eng	por
dc.peerreviewed	no	por
dc.subject	Visão humana	por
dc.title	Optical flow by multi-scale annotated keypoints: A biological approach	por
dc.type	conference object
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oaire.awardURI	info:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FEIA%2F73633%2F2006/PT
oaire.fundingStream	3599-PPCDT
person.familyName	Farrajota
person.familyName	Rodrigues
person.familyName	du Buf
person.givenName	Miguel
person.givenName	Joao
person.givenName	Hans
person.identifier.ciencia-id	8A19-98F7-9914
person.identifier.orcid	0000-0001-7970-4649
person.identifier.orcid	0000-0002-3562-6025
person.identifier.orcid	0000-0002-4345-1237
person.identifier.rid	M-5125-2013
person.identifier.scopus-author-id	55807461600
person.identifier.scopus-author-id	6604075916
project.funder.identifier	http://doi.org/10.13039/501100001871
project.funder.name	Fundação para a Ciência e a Tecnologia
rcaap.rights	openAccess	por
rcaap.type	conferenceObject	por
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