Now showing items 13-24 of 68

  • Visualization of large-scale urban models through multi-level relief impostors 

    Andújar Gran, Carlos Antonio; Brunet Crosa, Pere; Chica Calaf, Antonio; Navazo Álvaro, Isabel (North Holland, 2010-12)
    Article
    Restricted access - publisher's policy
    In this paper, we present an efficient approach for the interactive rendering of large-scale urban models, which can be integrated seamlessly with virtual globe applications. Our scheme fills the gap between standard ...
  • Mesh repair with user-friendly topology control 

    Hétroy, Franck; Rey, Stéphanie; Andújar Gran, Carlos Antonio; Brunet Crosa, Pere; Vinacua Pla, Álvaro (Elsevier, 2011-01)
    Article
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    Limitations of current 3D acquisition technology often lead to polygonal meshes exhibiting a number of geometrical and topological defects which prevent them from widespread use. In this paper we present a new method for ...
  • Topographic map visualization from adaptively compressed textures 

    Andújar Gran, Carlos Antonio (North Holland, 2010)
    Article
    Open Access
    Raster-based topographic maps are commonly used in geoinformation systems to overlay geographic entities on top of digital terrain models. Using compressed texture formats for encoding topographic maps allows reducing ...
  • Simulation and study of the geometric parameters in the inguinal area and the genesis of inguinal hernias 

    Fortuny Anguera, Gerard; López Cano, Manuel; Susín Sánchez, Antonio; Herrera, Blas (Gordon and Breach Science Publishers, 2011-05)
    Article
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    We are interested in studying the genesis of a very common pathology: the human inguinal hernia. How the human inguinal hernia appears is not definitively clear, but it is accepted that it is caused by a combination of ...
  • Reflector design from radiance distributions 

    Patow, Gustavo Ariel; Pueyo Sandez, Francesc Xavier; Vinacua Pla, Álvaro (Institute for Applied Mathematics and Information Technology, 2004-12)
    Article
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    This paper proposes a technique for the design of reflector shapes from prescribed optical properties (far field radiance distribution) and geometrical constraints, which is of high importance in the field of Lighting ...
  • Enhancing collaboration in virtual reality applications 

    Theoktisto, Víctor; Fairén González, Marta (2005-10)
    Article
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    We derive a complete component framework for transforming standalone virtual reality (VR) applications into fullfledged multithreaded collaborative virtual reality environments (CVREs), after characterizing existing ...
  • Space efficient connectivity test for n-dimensional images 

    Andújar Gran, Carlos Antonio (1998-08)
    Article
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    An image is a discrete array whose elements, called points, represent some property. Images are broadly used in computer graphics. In 2D graphics applications, color, depth and other image properties are frequently used. ...
  • Way-finder: guided tours through complex walkthrough models 

    Andújar Gran, Carlos Antonio; Vázquez Alcocer, Pere Pau; Fairén González, Marta (North Holland, 2004-09)
    Article
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    The exploration of complex walkthrough models is often a difficult task due to the presence of densely occluded regions which pose a serious challenge to online navigation. In this paper we address the problem of algorithmic ...
  • Automatic keyframe selection for high-quality image-based walkthrough animation using viewpoint entropy 

    Vázquez Alcocer, Pere Pau; Sbert Cassasayas, Mateu (2002-02)
    Article
    Open Access
    The computation of high quality animation sequences is expensive. Generation time for each frame can take a few hours Recently, Image-Based Rendering methods have been proposed to solve this problem. As these techniques ...
  • An interactive 3D framework for anatomical education 

    Vázquez Alcocer, Pere Pau; Götzelmann, Timo; Hartmann, Knut; Nürnberger, Andreas (2008-12)
    Article
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    Object: This paper presents a 3D framework for Anatomy teaching. We are mainly concerned with the proper understanding of human anatomical 3D structures. Materials and methods: The main idea of our approach is taking an ...
  • Optimal exploitation of client texture hardware capabilities on a client-server remote visualization framework 

    Boada, Imma; Navazo Álvaro, Isabel (2003-05)
    Article
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    Given a client-server communication network, with workstations equipped with 3D texture hardware, we propose a technique that guarantees the optimal use of the client texture hardware. We consider the best representation ...
  • ShieldTester: cell-to-cell visibility test for surface occluders 

    Navazo Álvaro, Isabel; Rossignac, Jarek; Jou, J; Shariff, R (North Holland, 2003-09)
    Article
    Restricted access - publisher's policy
    We present a novel Cell-To-Cell Visibility (C2CV) algorithm, which given two polyhedra,A and B and a connected and oriented manifold triangle mesh, S offers a simple, fast, and conservative test for detecting when A and B ...