Search Results

Now showing 1 - 10 of 16
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    Editorial
    (The Eurographics Association and Blackwell Publishing Ltd, 2006) Duke, David; Scopigno, Roberto
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    Exploiting the scanning sequence for automatic registration of large sets of range maps
    (The Eurographics Association and Blackwell Publishing, Inc, 2005) Pingi, Paolo; Fasano, Andrea; Cignoni, Paolo; Montani, Claudio; Scopigno, Roberto
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    Editorial
    (The Eurographics Association and Blackwell Publishing Ltd., 2006) Duke, David; Scopigno, Roberto
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    Computer Graphics forum
    (Blackwell Publishing, Inc and Eurographics Association, 2003) Duke, David; Scopigno, Roberto
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    A Multiresolution Model for Soft Objects Supporting Interactive Cuts and Lacerations
    (Blackwell Publishers Ltd and the Eurographics Association, 2000) Ganovelli, Fabio; Cignoni, Paolo; Montani, Claudio; Scopigno, Roberto
    Performing a really interactive and physically-based simulation of complex soft objects is still an open problem in computer animation/simulation. Given the application domain of virtual surgery training, a complete model should be quite realistic, interactive and should enable the user to modify the topology of the objects. Recent papers propose the adoption of multiresolution techniques to optimize time performance by representing at high resolution only the object parts considered more important or critical. The speed up obtainable at simulation time are counterbalanced by the need of a preprocessing phase strongly dependent on the topology of the object, with the drawback that performing dynamic topology modification becomes a prohibitive issue. In this paper we present an approach that couples multiresolution and topological modifications, based on the adoption of a particle systems approach to the physical simulation. Our approach is based on a tetrahedral decomposition of the space, chosen both for its suitability to support a particle system and for the ready availability of many techniques recently proposed for the simplification and multiresolution management of 3D simplicial decompositions. The multiresolution simulation system is designed to ensure the required speedup and to support dynamic changes of the topology, e.g. due to cuts or lacerations of the represented tissue.
  • Item
    Editorial
    (The Eurographics Association and Blackwell Publishing Ltd., 2005) Duke, David; Scopigno, Roberto
  • Item
    Computer Graphics forum
    (The Eurographics Association and Blackwell Publishing, Inc, 2004) Duke, David; Scopigno, Roberto
  • Item
    Editorial
    (The Eurographics Association and Blackwell Publishing Ltd., 2005) Duke, David; Scopigno, Roberto
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    3D Scanning Technology: Capabilities and Issues
    (Blackwell Publishers, Inc and the Eurographics Association, 2002) Scopigno, Roberto
    The recent evolution of graphics technology makes it possible to manage very complex models on inexpensive platforms. These impressive rendering capabilities should be paired with detailed and accurate digital models. The construction of high quality 3D models is made easier by the increasing diffusion of automatic 3D measuring devices (often called 3D scanners). These allow to build highly accurate models of real 3D objects in a cost- and time-effective manner. The talk will present the capabilities of this technology focusing mainly on a particular application context: the acquisition of Cultural Heritage artifacts. The peculiar requirements of this domain (high accuracy in the acquisition of both shape and surface appearance, expected low cost and easiness of use of the tools) make it a perfect application example. This talk aims also at presenting and discussing the main issues in the acquisition of accurate 3D models, together with some limitations of current hardware and software tools. Some examples of the results of current projects will be shown.
  • Item
    Editorial
    (Blackwell Publishers, Inc and the Eurographics Association, 2003) Duke, David; Scopigno, Roberto