CRS4 Articolo

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https://hdl.handle.net/11050/49
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Mostra il contenuto di CRS4 Articolo per Autore "Bettio, Fabio"

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    An interactive 3D medical visualization system based on a light field display
    (Springer-Verlag, 2009-09-01) Agus, Marco; Bettio, Fabio; Giachetti, Andrea; Gobbetti, Enrico; Iglesias Guitián, José Antonio; Marton, Fabio; Nilsson, Jonas; Pintore, Giovanni; CRS4
    We present a prototype medical data visualization system exploiting a light field display and custom direct volume rendering techniques to enhance understanding of massive volumetric data, such as CT, MRI, and PET scans. The system can be integrated with standard medical image archives and extends the capabilities of current radiology workstations by supporting real-time rendering of volumes of potentially unlimited size on light field displays generating dynamic observer-independent light fields. The system allows multiple untracked naked-eye users in a sufficiently large interaction area to coherently perceive rendered volumes as real objects, with stereo and motion parallax cues. In this way, an effective collaborative analysis of volumetric data can be achieved. Evaluation tests demonstrate the usefulness of the generated depth cues and the improved performance in understanding complex spatial structures with respect to standard techniques.
  • Immagine di anteprima
    Item
    An interactive 3D medical visualization system based on a light field display
    (Springer, 2009-09) Agus, Marco; Bettio, Fabio; Giachetti, Andrea; Gobbetti, Enrico; Iglesias Guitián, José Antonio; Marton, Fabio; Nilsson, Jonas; Pintore, Giovanni
    This paper presents a prototype medical data visualization system exploiting a light field display and custom direct volume rendering techniques to enhance understanding of massive volumetric data, such as CT, MRI, and PET scans. The system can be integrated with standard medical image archives and extends the capabilities of current radiology workstations by supporting real-time rendering of volumes of potentially unlimited size on light field displays generating dynamic observer-independent light fields. The system allows multiple untracked naked-eye users in a sufficiently large interaction area to coherently perceive rendered volumes as real objects, with stereo and motion parallax cues. In this way, an effective collaborative analysis of volumetric data can be achieved. Evaluation tests demonstrate the usefulness of the generated depth cues and the improved performance in understanding complex spatial structures with respect to standard techniques.
  • Immagine di anteprima
    Item
    Scalable Rendering of Massive Triangle Meshes on Light Field Displays
    (Elsevier, 2008-02) Bettio, Fabio; Gobbetti, Enrico; Marton, Fabio; Pintore, Giovanni
    We report on a multiresolution rendering system driving light field displays based on a specially arranged array of projectors and a holographic screen. The system gives multiple freely moving naked-eye viewers the illusion of seeing and manipulating 3D objects with continuous viewer-independent parallax. Multi-resolution techniques which take into account the displayed light field geometry are employed to dynamically adapt model resolution to display capabilities and timing constraints. The approach is demonstrated on two different scales: a desktop PC driving a 7.4Mbeams TV-size display, and a cluster-parallel solution driving a large (1.6x0.9 meters) 35Mbeams display which supports a room-size working space. In both cases, massive meshes of tens of millions of triangles are manipulated at interactive rates.