Examinando por Materia "Matrices"
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Publicación Distribuciones matriciales unitariamente invariantes y residualmente independientes(Universidad EAFIT, 2007) Vélez Carvajal, Astrid Marissa; Nagar, Daya KrishnaPublicación Evaluación del desempeño de Carteras Colectivas representativas en Colombia bajo modelos cuantitativos(Universidad EAFIT, 2014) Laverde Zuleta, Jaime Andrés; Gómez Lopera, José RicardoPublicación Propiedades de las distribuciones beta y Dirichlet de matrices complejas(Universidad EAFIT, 2007) Bedoya Macías, Elizabeth; Nagar, Daya KrishnaPublicación Representación matricial de la función q− Exponencial(Universidad EAFIT, 2014) Castilla Peñate, Telvia Rosa; Vidal Esquivel, Freddy Antonio; Loaiza Ossa, Gabriel Ignacio; Castañeda Ramírez, Gustavo de JesúsPublicación Solución numérica de la ecuación KDV utilizando representación de operadores diferenciales en base wavelet(Universidad EAFIT, 2016) Castro Rodríguez, Denis Alberto; Aramburo Palacios, Darwin; Villegas Gutiérrez, Jairo Alberto; Castaño Bedoya, Jorge IvánÍtem Usage of 2D Region Similarity For Surface Reconstruction From Planar Samples(2003) Ruíz S., Óscar E.; Cadavid, Carlos A.; Granados, Miguel; Peña, Sebastián; Vásquez, Eliana; Universidad EAFIT. Departamento de Ingeniería Mecánica; Laboratorio CAD/CAM/CAEIn surface reconstruction from planar slices it is necessary to build surfaces between corresponding 2D regions in consecutive levels -- The problem has been traditionally attacked with (i) direct reconstruction based on local geometric proximity between the regions, and (ii) classification of topological events between the slices, which control the evolution of the cross cuts -- These approaches have been separately applied with mixed success -- In the case (i), the results may be surfaces with over-stretched or unnatural branches, resulting from a local contour proximity which does not correspond to global similarity between regions -- In (ii), the consequences from topological events upon the actual surface realization have not been drawn -- In this paper an integration of (i) and (ii) is presented, which uses a criteria of similarity between composed 2D regions in consecutive slices to: (a) decide if a surface should actually relate those regions, (b) identify the topological transitions between levels and (c) construct the local surface for the related regions -- The method implemented hinders over-stretched and unnatural branches, therefore rendering a surface which adjusts to geometrically-sound topological events -- This is a good alternative when the surface reconstructed needs to be topologically faithful (for example in flow simulation) in addition to represent the a rough geometrical space (for example in radiation planning)