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Summary: 1
Appeared: Computer & Graphics, Elsevier Science, Vol 22:1, pp. 71-81, 1998
Smooth Transitions in Texture-based Simplification
Daniel G. Aliaga, Anselmo A. Lastra
Department of Computer Science
University of North Carolina
Chapel Hill, NC 27599-3175
{aliaga | lastra}@cs.unc.edu
Abstract
We are investigating techniques for providing smooth transitions when simplifying
large, static geometric models with texture-based representations (or impostors). Traditionally,
textures have been used to replace complex geometry, for example the books on a shelf or the
complex foliage on a tree. Using textures in a more general manner is a relatively new area of
research. The key idea is that 2D image textures can be used to temporarily represent 3D
geometry. Rendering speed is increased if a replacement texture can be used for several frames,
since textures can be rendered quickly and independently of model complexity. Because a texture
is only correct from a single viewpoint, visual discontinuities, such as misalignment with
adjacent geometry, begin to appear as the texture is used from other viewpoints. Previous
approaches have controlled these errors by re-rendering the textures often or providing a large set
of precomputed textures. We have improved upon these methods by developing algorithms for:
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