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Papers by Alvar Vinacua

Mathematical Methods in Computer Aided Geometric Design, 1989

Mathematical Methods in Computer Aided Geometric Design II, 1992

Mathematical Engineering in Industry

... reference to library · Related research. The Automated Fairing of Ship Hull Lines Using Forma... more ... reference to library · Related research. The Automated Fairing of Ship Hull Lines Using Formal. Ebru Narli, Kadir Sari Oz in Structure (2004). 2 readers Save reference to library · Related research. NURBS skinning surface for ship ...

Graphical Models, 2012

ABSTRACT In this paper, we propose a novel strategy to automatically segment volume data using a ... more ABSTRACT In this paper, we propose a novel strategy to automatically segment volume data using a high-quality mesh segmentation of an “example” model as a guiding example. The example mesh is deformed until it matches the relevant volume features. The algorithm starts from a medical volume model (scalar field of densities) to be segmented, together with an already existing segmentation (polygonal mesh) of the same organ, usually from a different person. The pre-process step computes a suitable attracting scalar field in the volume model. After an approximate 3D registration between the example mesh and the volume (this is the only step requiring user intervention), the algorithm works by minimizing an energy and adapts the shape of the polygonal mesh to the volume features in order to segment the target organ. The resulting mesh adapts to the volume features in the areas which can be unambiguously segmented, while taking the shape of the example mesh in regions which lack relevant volume information. The paper discusses several examples involving human foot bones, with results that clearly outperform present segmentation schemes.

Computer Graphics Forum, 2007

Computer-Aided Design, 2005

Given the start positions of a group of dancers, a choreographer specifies their end positions an... more Given the start positions of a group of dancers, a choreographer specifies their end positions and says:" Run!" Each dancer has the choice of his/her motion. These choices influence the perceived beauty (or grace) of the overall choreography. We report experiments with an automatic approach, SAMBA, that computes a pleasing choreography. Rossignac and Vinacua focused on affine motions, which, in the plane, correspond to choreographies for three independent dancers. They proposed the inverse of the Average ...

Relief impostors have been proposed as a compact and high-quality representation for high-frequen... more Relief impostors have been proposed as a compact and high-quality representation for high-frequency detail in 3D models. In this paper we propose an algorithm to represent a complex object through the combination of a reduced set of relief maps. These relief maps can be rendered with very few artifacts and no apparent deformation from any view direction. We present an

International Journal of Shape Modeling, 2004

dialnet.unirioja.es

... | Ayuda. Diseño de curvas y superficies. Autores: Alvar Vinacua Pla; Localización: Informátic... more ... | Ayuda. Diseño de curvas y superficies. Autores: Alvar Vinacua Pla; Localización: Informática gráfica / coord. por Pascual González López, Jesús García-Consuegra Bleda, 1998, ISBN 84-89958-23-8 , pags. 139-157; Recoge ...

ACM Transactions on Graphics (TOG), Jan 1, 2011

Int. J. Shape Modeling, Jan 1, 2004