Exploració per tema "Geometric modeling"

Ara es mostren els items 1-5 de 5

    • Analysis of methods for generating octree models of objects from their silhouettes 

      Franquesa Niubó, Marta; Brunet Crosa, Pere (1996-09-10)
      Report de recerca
      Accés obert
      Reconstructing 3D models from their projection images has been an interesting research topic in computer vision and geometric modeling. In this paper, we review methods that generate octree models of objects ...

    • Multiresolution for algebraic curves and surfaces using wavelets 

      Esteve Cusiné, Jordi; Brunet Crosa, Pere; Vinacua Pla, Álvaro (1998-11)
      Report de recerca
      Accés obert
      This paper describes a multiresolution method for implicit curves and surfaces. The method is based on wavelets, and is able to simplify the topology. The implicit curves and surfaces are defined as the zero-valued ...

    • Non-homogeneous solid modeling with octrees. A geological application 

      Puig Puig, Anna; Navazo Álvaro, Isabel; Brunet Crosa, Pere (1993-03)
      Report de recerca
      Accés obert
      From an historical point of view, geometric modeling techniques usually represent the surface of solids. However, the increasing development of new fields in CAD applications like molecular systems, medicine, or geology, ...

    • Object representation by means of nonminimal division quadtrees and octrees 

      Ayala Vallespí, M. Dolors; Brunet Crosa, Pere; Juan, R.; Navazo Álvaro, Isabel (1985-01)
      Article
      Accés restringit per política de l'editorial
      Quadtree representation of two-dimensional objects is performed with a tree that describes the recursive subdivision of the more complex parts of a picture until the desired resolution is reached. At the end, all the leaves ...

    • Solid representation and operation using extended octrees 

      Brunet Crosa, Pere; Navazo Álvaro, Isabel (1990-04)
      Article
      Accés restringit per política de l'editorial
      Solid modelers must be based on reliable and fast algorithms for Boolean operations. The octree model, as well as several generalizations (polytrees, integrated polytrees, extended octrees), is specially well suited for ...