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Enhancements to Directional Coherence Maps

Annette Scheel 1 Marc Stamminger 2, 1, 3 Joerg Puetz 1 Hans-Peter Seidel 1 
2 REVES - Rendering and virtual environments with sound
CRISAM - Inria Sophia Antipolis - Méditerranée
3 iMAGIS - Models, Algorithms and Geometry for Computer Generated Image Graphics
GRAVIR - IMAG - Laboratoire d'informatique GRAphique, VIsion et Robotique de Grenoble, Inria Grenoble - Rhône-Alpes
Abstract : Directional Coherence Maps as proposed by Guo in '98 are a very efficient acceleration technique for ray tracing based global illumination renderers. It vastly reduces the number of pixels which have to be computed exactly by identifying regions which are suitable for interpolation. By using oriented finite elements for interpolation, the sampling density can be kept low for large regions of the target image. In this paper we describe extensions of the method. An improved object test is presented which prevents that small objects are missed. Additionally, it is shown how to handle textures efficiently, which was not possible with the original approach.
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Submitted on : Tuesday, July 26, 2011 - 1:54:13 PM
Last modification on : Wednesday, February 2, 2022 - 3:58:12 PM
Long-term archiving on: : Monday, November 7, 2011 - 11:32:09 AM


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  • HAL Id : inria-00606714, version 1



Annette Scheel, Marc Stamminger, Joerg Puetz, Hans-Peter Seidel. Enhancements to Directional Coherence Maps. 9th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision (WSCG 2001), Feb 2001, Plzen-Bory, Czech Republic. pp.403-410. ⟨inria-00606714⟩



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