Mostrar el registro sencillo del ítem
dc.contributor.author | Rodríguez Álvarez, María José | es_ES |
dc.contributor.author | Sánchez, Filomeno | es_ES |
dc.contributor.author | Soriano Asensi, Antonio | es_ES |
dc.contributor.author | Iborra Carreres, Amadeo | es_ES |
dc.date.accessioned | 2015-11-24T13:29:02Z | |
dc.date.available | 2015-11-24T13:29:02Z | |
dc.date.issued | 2010-10 | |
dc.identifier.issn | 0895-7177 | |
dc.identifier.uri | http://hdl.handle.net/10251/58006 | |
dc.description.abstract | In medicine, computed tomographic images are reconstructed from a large number of measurements of X-ray transmission through the patient (projection data). The mathematical model used to describe a computed tomography device is a large system of linear equations of the form AX=B. In this paper we propose the QR decomposition as a direct method to solve the linear system. QR decomposition can be a large computational procedure. However, once it has been calculated for a specific system, matrices Q and R are stored and used for any acquired projection on that system. Implementation of the QR decomposition in order to take more advantage of the sparsity of the system matrix is discussed. | es_ES |
dc.description.sponsorship | This work is partially supported by Generalitat Valenciana GVPRE/2008/303 and the Spanish M.E.C. grant MTM2009-08587. | en_EN |
dc.language | Inglés | es_ES |
dc.publisher | Elsevier | es_ES |
dc.relation.ispartof | Mathematical and Computer Modelling | es_ES |
dc.rights | Reserva de todos los derechos | es_ES |
dc.subject | Givens rotations | es_ES |
dc.subject | QR-factorization | es_ES |
dc.subject | Computed tomography | es_ES |
dc.subject | Image reconstruction | es_ES |
dc.subject.classification | MATEMATICA APLICADA | es_ES |
dc.title | Sparse Givens resolution of large system of linear equations: applications to image reconstruction | es_ES |
dc.type | Artículo | es_ES |
dc.identifier.doi | 10.1016/j.mcm.2010.03.016 | |
dc.relation.projectID | info:eu-repo/grantAgreement/GVA//GVPRE%2F2008%2F303/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/MICINN//MTM2009-08587/ES/Ecuaciones Diferenciales Aleatorias Y Aplicaciones/ | es_ES |
dc.rights.accessRights | Abierto | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Departamento de Matemática Aplicada - Departament de Matemàtica Aplicada | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Instituto de Instrumentación para Imagen Molecular - Institut d'Instrumentació per a Imatge Molecular | es_ES |
dc.description.bibliographicCitation | Rodríguez Álvarez, MJ.; Sánchez, F.; Soriano Asensi, A.; Iborra Carreres, A. (2010). Sparse Givens resolution of large system of linear equations: applications to image reconstruction. Mathematical and Computer Modelling. 52(7-8):1258-1264. https://doi.org/10.1016/j.mcm.2010.03.016 | es_ES |
dc.description.accrualMethod | S | es_ES |
dc.relation.publisherversion | http://dx.doi.org/10.1016/j.mcm.2010.03.016 | es_ES |
dc.description.upvformatpinicio | 1258 | es_ES |
dc.description.upvformatpfin | 1264 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.description.volume | 52 | es_ES |
dc.description.issue | 7-8 | es_ES |
dc.relation.senia | 39755 | es_ES |
dc.contributor.funder | Ministerio de Ciencia e Innovación | es_ES |
dc.contributor.funder | Generalitat Valenciana | es_ES |