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dc.contributor.authorMakram-Ebeid, Sherif
dc.contributor.authorSomphone, Oudom
dc.subjectFinite element methoden
dc.subjectImage Registrationen
dc.titleNon-Rigid Image Registration using a Hierarchical Partition of Unity Finite Element Methoden
dc.typeCommunication / Conférence
dc.contributor.editoruniversityotherMedisysResearch Lab (Medisys) Philips Healthcare;France
dc.description.abstractenWe use a hierarchical partition of unity finite element method (H-PUFEM) to represent and analyse the non-rigid deformation fields involved in multidimensional image registration. We make use of the Ritz-Galerkin direct variational method to solve non-rigid image registration problems with various deformation constraints. In this method, we directly seek a set of parameters that minimizes the objective function. We thereby avoid the loss of information that may occur when an Euler-Lagrange formulation is used. Experiments are conducted to demonstrate the advantages of our approach when registering synthetic images having little of or no localizing features. As a special case, conformal mapping problems can be accurately solved in this manner. We also illustrate our approach with an application to cardiac magnetic resonance temporal sequences.en
dc.relation.ispartoftitleComputer Vision, 2007. ICCV 2007. IEEE 11th International Conference onen
dc.relation.ispartofpublnameIEEE Computer Societyen
dc.subject.ddclabelIntelligence artificielleen
dc.relation.ispartofisbnE-ISBN : 978-1-4244-1631-8 Print ISBN: 978-1-4244-1631-8en
dc.relation.conftitleICCV 2007en
dc.relation.confcityRio de Janeiroen

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