Title: Efficient raytracing of deforming point-sampled surfaces
Authors: Adams, Bart ×
Keiser, Richard
Pauly, Mark
Guibas, Leonidas J.
Gross, Marcus
Dutré, Philip #
Issue Date: Aug-2005
Publisher: Blackwell publishing
Series Title: Computer graphics forum vol:24 issue:3 pages:677-684
Conference: Eurographics 2005 location:Dublin date:29 AUgust - 2 September 2005
Abstract: We present efficient data structures and caching schemes to accelerate ray-surface intersections for deforming point-sampled surfaces. By exploiting spatial and temporal coherence of the deformation during the animation, we are able to improve rendering performance by a factor of two to three compared to existing techniques. Starting from a tight bounding sphere hierarchy for the undeformed object, we use a lazy updating scheme to adapt the hierarchy to the deformed surface in each animation step. In addition, we achieve a significant speedup for ray-surface intersections by caching per-ray intersection points. We also present a technique for rendering sharp edges and corners in point-sampled models by introducing a novel surface clipping algorithm.
ISSN: 0167-7055
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Informatics Section
× corresponding author
# (joint) last author

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