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dc.contributor.authorFerrer Arnau, Luis Jorge
dc.contributor.authorParisi Baradad, Vicenç
dc.contributor.authorReig Bolano, Ramon
dc.contributor.authorMarti Puig, Pere
dc.contributor.authorManjabacas, A.
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica
dc.date.accessioned2011-12-14T16:17:31Z
dc.date.available2011-12-14T16:17:31Z
dc.date.created2011
dc.date.issued2011
dc.identifier.citationFerrer-Arnau, Ll. [et al.]. Efficient representation of contours using splines implemented with FIR filters. A: International Conference on Next Generation Web Services Practices. "7th International Conference on Next Generation Web Services Practices". Salamanca: 2011, p. 125-128.
dc.identifier.urihttp://hdl.handle.net/2117/14250
dc.description.abstractThe interpolation of contour pixels, with splines, of an order greater than or equal to two, usually causes oscillations that do not fit the original shape. To overcome this we propose using a least squares filter before carrying out the interpolation. This results in a good compromise between the smoothness of the curve and the best fit to the original contour. Representing the contour with a continuous model instead of a discrete model has many advantages for carrying out calculations, as for example the contour curvature, which involves first and second order derivatives, as well as operations that are not well defined in the discrete world. We also present a new way of calculating FIR approximations to filters based on B-splines. The great advantage of this approximation in the case of least squares filter is that it does not need downsampling. This property makes it invariant to translations, and this is very important in classification tasks.
dc.format.extent4 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal::Processament de la imatge i del senyal vídeo
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal::Reconeixement de formes
dc.subjectÀrees temàtiques de la UPC::Enginyeria agroalimentària::Ciències de la terra i de la vida::Biologia
dc.subject.lcshOtoliths
dc.subject.lcshImage processing
dc.subject.lcshSplines
dc.subject.lcshPattern recognition systems--Data processing
dc.titleEfficient representation of contours using splines implemented with FIR filters
dc.typeConference report
dc.subject.lemacOtòlits
dc.subject.lemacImatges -- Processament
dc.subject.lemacFons marins -- Investigació
dc.subject.lemacSplines (Matemàtica)
dc.subject.lemacReconeixement de formes (Informàtica)
dc.contributor.groupUniversitat Politècnica de Catalunya. (TIEG) - Terrassa Industrial Electronics Group
dc.identifier.doi10.1109/NWeSP.2011.6088164
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6088164
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac8785958
dc.description.versionPostprint (published version)
local.citation.authorFerrer-Arnau, Ll.; Parisi, V.; Reig, R.; Marti, P.; Manjabacas, A.
local.citation.contributorInternational Conference on Next Generation Web Services Practices
local.citation.pubplaceSalamanca
local.citation.publicationName7th International Conference on Next Generation Web Services Practices
local.citation.startingPage125
local.citation.endingPage128


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