Enviaments recents

  • A multi-projector CAVE system with commodity hardware and gesture-based interaction 

    Andújar Gran, Carlos Antonio; Brunet Crosa, Pere; Vinacua Pla, Álvaro; Vico Moya, Miguel Ángel; Díaz García, Jesús (2017-01-12)
    Report de recerca
    Accés obert
    Spatially-immersive systems such as CAVEs provide users with surrounding worlds by projecting 3D models on multiple screens around the viewer. Compared to alternative immersive systems such as HMDs, CAVE systems are a ...
  • 3D triangular mesh to represent the left ventricle volume of the heart 

    Rodriguez, Lyudmila; Navazo Álvaro, Isabel; Vinacua Pla, Álvaro (2002-07-01)
    Report de recerca
    Accés obert
    This report describes an algorithm for the generation of unstructured tetrahedral meshes from two triangular meshes: the internal and external walls of an object. The tetrahedral mesh thus obtained represents the volume ...
  • Using projective octrees in 3D reconstruction 

    García Diego, Blanca; Brunet Crosa, Pere (1997-11)
    Report de recerca
    Accés obert
    In this paper, the problem of reconstructing a 3D object by means of an octree-like structure with the help of epipolar geometry within a projective framework is addressed. After a brief introduction to the concept ...
  • Surface fairing for ship hull design application. 

    Brunet Crosa, Pere; Vinacua Pla, Álvaro; Vivo Lorenzo, Manuel; Pla García, Núria; Rodríguez, A (1998-06)
    Report de recerca
    Accés obert
    This paper describes the design and implementation of a fairing module for a ship hull design application. This module is part of a large project on ship design, including facilities for piping, hull design and virtual ...
  • Research trends in volume modeling 

    Navazo Álvaro, Isabel; Puig Puig, Anna; Tost Pardell, Daniela (1993-09)
    Report de recerca
    Accés obert
    Volume modeling has recently emerged as a promising field of research and development. A generic scheme of volume modeling applications is proposed and applied to existing volume modeling applications. Next, volume modeling ...
  • Octree simplification of polyhedral solids 

    Ayala Vallespí, M. Dolors; Brunet Crosa, Pere (1995-02)
    Report de recerca
    Accés obert
    Multiresolution representations are becoming more and more important for the visualization, operation and interrogation of very complex scenes. In this paper, an automatic simplification algorithm for general two-manifold ...
  • 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, ...
  • Multiresolution approximation of polyhedral solids 

    Ayala Vallespí, M. Dolors; Brunet Crosa, Pere; Joan Arinyo, Robert; Navazo Álvaro, Isabel (1996-06)
    Report de recerca
    Accés obert
    Multiresolution models with different levels of detail are a basic tool for handling very large and complex systems in computer aided design applications such as ship design. In this work, we discuss several automatic ...
  • Multiresolució de corbes i superfícies. B-splines cúbiques mitjancant wavelets 

    Esteve Cusiné, Jordi (1997-09)
    Report de recerca
    Accés obert
    This paper describes two multiresolution methods for cubic Bsplines curves and surfaces based on wavelets and the computer application derived. The first multiresolution method deals with end-interpolating cubic Bsplines ...
  • Multiresolució de corbes i superfícies implícites amb Wavelets 

    Esteve Cusiné, Jordi (1997-11)
    Report de recerca
    Accés obert
    This paper describes a multiresolution method for implicit curves and surfaces based on wavelets. The implicit curves and surfaces are defined as the zero-valued algebraic isosurface of a tensor product uniform cubic ...
  • MDCO to B-Rep conversion algorithm 

    Ayala Vallespí, M. Dolors; Andújar Gran, Carlos Antonio; Brunet Crosa, Pere (1995-07)
    Report de recerca
    Accés obert
    Spatial enumeration models are widely used in several fields. These models are approximate but the major disadvantage is the lack of concision. In order to avoid such verbosity, hierarchical encodings such as octrees have ...
  • Disseny d'un octree extés 

    Monclús Lahoya, Eva; Navazo Álvaro, Isabel (1997-09)
    Report de recerca
    Accés obert
    The Extended Octree is a generalization of classical Octree, based on the inclusion of four new node types (Face, Edge, Vertex and QuasiVertex). These new terminal nodes contain a piece of the boundary of the object ...

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