Title: Enhancement to Directional Coherence Maps
Authors: Scheel, Annette
Stamminger, Marc
Pütz, Jörg
Seidel, Hans-Peter
Citation: WSCG '2001: Conference proceedings: The 9-th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision 2001: University of West Bohemia, Plzen, Czech Republic, February 5.-9., 2001, p. 403-410.
Issue Date: 2001
Publisher: University of West Bohemia
Document type: konferenční příspěvek
URI: http://wscg.zcu.cz/wscg2001/Papers_2001/R345.pdf.gz
ISBN: 80-7082-713-0
ISSN: 1213-6972
Keywords: směrové koherenční mapy;vykreslování;interpolace
Keywords in different language: directional coherence maps;rendering;interpolation
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.
Rights: © University of West Bohemia
Appears in Collections:WSCG '2001: Conference proceedings

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