PACANOWSKI, Romain; GRANIER, Xavier; SCHLICK, Christophe; PIERRE, Poulin

doi:10.1007/s11390-010-9377-2

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PACANOWSKI, Romain
Centre d'études scientifiques et techniques d'Aquitaine (CESTA-CEA) [CESTA]

GRANIER, Xavier
Visualization and manipulation of complex data on wireless mobile devices [IPARLA ]
Laboratoire Bordelais de Recherche en Informatique [LaBRI]
State Key Lab CAD&CG [HangZhou]

SCHLICK, Christophe
Visualization and manipulation of complex data on wireless mobile devices [IPARLA ]
Laboratoire Bordelais de Recherche en Informatique [LaBRI]

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Journal of Computer Science and Technology. 2010-09-10, vol. 25, n° 5, p. 925-932

Springer Verlag

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This paper introduces a caching technique based on a volumetric representation that captures low-frequency indirect illumination. This structure is intended for efficient storage and manipulation of illumination. It is based on a 3D grid that stores a fixed set of irradiance vectors. During preprocessing, this representation can be built using almost any existing global illumination software. During rendering, the indirect illumination within a voxel is interpolated from its associated irradiance vectors, and is used as additional local light sources. Compared with other techniques, the 3D vector-based representation of our technique offers increased robustness against local geometric variations of a scene. We thus demonstrate that it may be employed as an efficient and high-quality caching data structure for bidirectional rendering techniques such as particle tracing or Photon Mapping.< Réduire

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Volumetric Vector-based Representation for Indirect Illumination Caching

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