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dc.contributor.authorAvilés Rivero, Angélica Ivone
dc.contributor.authorSobrevilla Frisón, Pilar
dc.contributor.authorCasals Gelpi, Alicia
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria de Sistemes, Automàtica i Informàtica Industrial
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Matemàtica Aplicada II
dc.contributor.otherInstitut de Bioenginyeria de Catalunya
dc.date.accessioned2014-12-02T09:18:48Z
dc.date.created2014
dc.date.issued2014
dc.identifier.citationAviles, A.; Sobrevilla, P.; Casals, A. Unconstrained L1-regularized minimization with interpolated transformations for heart motion compensation. A: IEEE Engineering in Medicine and Biology Society. "Proceedings of the 36th. Annual International Conference of the IEEE Engineering in Medicine and Biology Society". Chicago: 2014, p. 5109-5112.
dc.identifier.urihttp://hdl.handle.net/2117/24894
dc.description.abstractMotion compensation constitutes a challenging issue in minimally invasive beating heart surgery. Since the zone to be repaired has a dynamic behaviour, precision and surgeon's dexterity decrease. In order to solve this problem, various proposals have been presented using l2-norm. However, as they present some limitations in terms of robustness and efficiency, motion compensation is still considered an open problem. In this work, a solution based on the class of l1-Regularized Optimization is proposed. It has been selected due to its mathematical properties and practical benefits. In particular, deformation is characterized by cubic B-splines since they offer an excellent balance between computational cost and accuracy. Moreover, due to the non-differentiability of the functional, the logarithmic barrier function is used for generating a standard optimization problem. Results have provided a very good trade-off between accuracy and efficiency, indicating the potential of the proposed approach and proving its stability even under complex deformations.
dc.format.extent4 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Informàtica::Intel·ligència artificial::Agents intel·ligents
dc.subjectÀrees temàtiques de la UPC::Informàtica::Aplicacions de la informàtica::Bioinformàtica
dc.subject.lcshHeart beat
dc.titleUnconstrained L1-regularized minimization with interpolated transformations for heart motion compensation
dc.typeConference report
dc.subject.lemacCor -- Batecs
dc.contributor.groupUniversitat Politècnica de Catalunya. ICAIB - Grup de Recerca en Intel ligència Computacional per a l'Anàlisi d'Imatge Biomèdica
dc.contributor.groupUniversitat Politècnica de Catalunya. GRINS - Grup de Recerca en Robòtica Intel·ligent i Sistemes
dc.identifier.doi10.1109/EMBC.2014.6944774
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://emb.citengine.com/event/embc-2014/paper-details?pdID=1855
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac15144800
dc.description.versionPostprint (published version)
dc.date.lift10000-01-01
local.citation.authorAviles, A.; Sobrevilla, P.; Casals, A.
local.citation.contributorIEEE Engineering in Medicine and Biology Society
local.citation.pubplaceChicago
local.citation.publicationNameProceedings of the 36th. Annual International Conference of the IEEE Engineering in Medicine and Biology Society
local.citation.startingPage5109
local.citation.endingPage5112


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