Displacement Mapped Billboard Clouds

poster

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• Publication Type: Poster
• Month: April
• Keywords: rendering acceleration, billboard clouds, image-based rendering

@misc\{MANTLER-2007-DMBBC,
  title =      "Displacement Mapped Billboard Clouds",
  author =     "Stephan Mantler and Stefan Jeschke and Michael Wimmer",
  year =       "2007",
  abstract =   "This paper introduces displacement mapped billboard clouds
               (DMBBC), a new image-based rendering primitive for the fast
               display of geometrically complex objects at medium to far
               distances. The representation is based on the well-known
               billboard cloud (BBC) technique, which represents an object
               as several textured rectangles in order to dramatically
               reduce its geometric complexity. Our new method uses boxes
               instead of rectangles, each box representing a volumetric
               part of the model. Rendering the contents of a box is done
               entirely on the GPU using ray casting. DMBBCs will often
               obviate the need to switch to full geometry for closer
               distances, which is especially helpful for scenes that are
               densely populated with complex objects, e.g. for vegetation
               scenes. We show several ways to store the volumetric
               information, with different tradeoffs between memory
               requirements and image quality. In addition we discuss
               techniques to accelerate the ray casting algorithm, and a
               way for smoothly switching between DMBBCs for medium
               distances and BBCs for far distances.",
  note =       "Poster presented at Symposium on Interactive 3D Graphics and
               Games (30.4.2007--2.5.2007)",
  pages =      "%pages_from%--%pages_to%",
  month =      apr,
  event =      "Symposium on Interactive 3D Graphics and Games",
  keywords =   "rendering acceleration, billboard clouds, image-based
               rendering",
  URL =        "http://www.cg.tuwien.ac.at/research/publications/2007/MANTLER-2007-DMBBC/",
}