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dc.contributor.author | Ricolfe Viala, Carlos | es_ES |
dc.contributor.author | Sánchez Salmerón, Antonio José | es_ES |
dc.contributor.author | Martínez Bertí, Enrique | es_ES |
dc.date.accessioned | 2013-04-15T10:49:09Z | |
dc.date.available | 2013-04-15T10:49:09Z | |
dc.date.issued | 2012 | |
dc.identifier.issn | 0003-6935 | |
dc.identifier.uri | http://hdl.handle.net/10251/27831 | |
dc.description | This paper was published in APPLIED OPTICS and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ao/viewmedia.cfm?uri=ao-51-1-89&seq=0. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law | en_EN |
dc.description.abstract | Camera calibration is a two-step process where first a linear algebraic approximation is followed by a nonlinear minimization. The nonlinear minimization adjusts the pin-hole and lens distortion models to the calibrating data. Since both models are coupled, nonlinear minimization can converge to a local solution easily. Moreover, nonlinear minimization is poorly conditioned since parameters with different effects in the minimization function are calculated simultaneously (some are in pixels, some in world coordinates, and some are lens distortion parameters). A local solution is adapted to parameters, which minimize the function easily, and the remaining parameters are just adapted to this solution.We propose a calibration method where traditional calibration steps are inverted. First, a nonlinear minimization is done, and after, camera parameters are computed in a linear step. Using projective geometry constraints in a nonlinear minimization process, detected point locations in the images are corrected. The pin-hole and lens distortion models are computed separately with corrected point locations. The proposed method avoids the coupling between both models. Also, the condition of nonlinear minimization increases since points coordinates are computed alone. © 2011 Optical Society of America. | es_ES |
dc.language | Inglés | es_ES |
dc.publisher | Optical Society of America | |
dc.relation.ispartof | Applied Optics | es_ES |
dc.rights | Reserva de todos los derechos | es_ES |
dc.subject | Calibration method | es_ES |
dc.subject | Camera calibration | es_ES |
dc.subject | Camera parameter | es_ES |
dc.subject | Different effects | es_ES |
dc.subject | Distorted images | es_ES |
dc.subject | Lens distortion | es_ES |
dc.subject | Lens distortion parameters | es_ES |
dc.subject | Linear-algebraic | es_ES |
dc.subject | Local solution | es_ES |
dc.subject | Minimization function | es_ES |
dc.subject | Nonlinear minimization | es_ES |
dc.subject | Point location | es_ES |
dc.subject | Projective geometry | es_ES |
dc.subject | Traditional calibration | es_ES |
dc.subject | Two-step process | es_ES |
dc.subject | World coordinates | es_ES |
dc.subject | Cameras | es_ES |
dc.subject | Calibration | es_ES |
dc.subject.classification | INGENIERIA DE SISTEMAS Y AUTOMATICA | es_ES |
dc.title | Accurate calibration with highly distorted images | es_ES |
dc.type | Artículo | es_ES |
dc.rights.accessRights | Cerrado | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Departamento de Ingeniería de Sistemas y Automática - Departament d'Enginyeria de Sistemes i Automàtica | es_ES |
dc.description.bibliographicCitation | Ricolfe Viala, C.; Sánchez Salmerón, AJ.; Martínez Berti, E. (2012). Accurate calibration with highly distorted images. Applied Optics. 51(1):89-101. http://hdl.handle.net/10251/27831 | es_ES |
dc.description.accrualMethod | S | es_ES |
dc.relation.publisherversion | http://www.opticsinfobase.org/ao/viewmedia.cfm?uri=ao-51-1-89&seq=0 | es_ES |
dc.description.upvformatpinicio | 89 | es_ES |
dc.description.upvformatpfin | 101 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.description.volume | 51 | es_ES |
dc.description.issue | 1 | es_ES |
dc.relation.senia | 208975 |