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Conference Papers Year : 1997

Efficient Impostor Manipulation for Real-Time Visualization of Urban Scenery

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Abstract

Urban environments present unique challenges to interactive visualization systems, because of the huge complexity of the geometrical data and the widely varying visibility conditions. The paper introduces a new framework for real-time visualization of such urban scenes. The central concept is that of a dynamic segmentation of the dataset, into a local three dimensional model and a set of impostors used to represent distant scenery. A segmentation model is presented, based on inherent urban structures. A new impostor structure is introduced, derived from the level-of-detail approach. Impostors combine three-dimensional geometry to correctly model large depth discontinuities and parallax, and textures to rapidly display visual detail. We present the algorithm necessary for the creation of accurate and efficient three-dimensional impostors. The implementation of our algorithms allows interactive navigation in complex urban databases, as required by many applications.
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Dates and versions

inria-00510095 , version 1 (19-08-2010)

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  • HAL Id : inria-00510095 , version 1

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François X. Sillion, George Drettakis, Benoit Bodelet. Efficient Impostor Manipulation for Real-Time Visualization of Urban Scenery. Computer Graphics Forum (Proc. of Eurographics '97), 1997, Budapest, Hungary. pp.207--218. ⟨inria-00510095⟩
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