%0 Conference Proceedings
%T Metamorfose de modelos poliedrais utilizando campos vetoriais em tetraedrações
%A Kallmann, Marcelo Eugênio,
%A Oliveira, Antonio Alberto Fernandes de,
%E Velho, Luiz,
%E Albuquerque, Arnaldo de,
%E Lotufo, Roberto A.,
%B Simpósio Brasileiro de Computação Gráfica e Processamento de Imagens, 9 (SIBGRAPI)
%8 29 out. - 1 nov. 1996
%I Sociedade Brasileira de Computação
%J Porto Alegre
%1 SBC - Sociedade Brasileira de Computação; UFMG - Universidade Federal de Minas Gerais
%K morphing, shape interpolation, boundary representation, triangulation, tetrahedralization.
%X Many aproaches have been proposed to generate a shape interpolation, or morphing, of polyhedral objects in a facet based representation. Most of them focus only the correspondence problem, leaving the interpolation process to just a corresponding vertices interpolation. In this paper we present a variation for the 3-dimension space of the technic used in [Oliv96], that uses TFDs (Fields of Directions defined in a Triangulation). Our algorithm is based on a field of vectors defined in a constrained tetrahedralization of the space between the two objects to be interpolated, after having placed one inside the other. The algorithm guarantees to generate homeomorphisms and a topology preserving continuous transformation process between the models. Examples of such transformations involving simple models are presented to ilustrate the approach.
%9 Modelagem Geométrica