Title: Improved Illumination Estimation for Photon Maps in Architectural Scenes
Authors: Tobler, F.
Maierhofer, Stefan
Citation: WSCG '2006: Full Papers Proceedings: The 14-th international Conference in Central Europe on Computer Graphics, Visualization and Computer Vision 2006: University of West Bohemia, Plzen, Czech Republic, January 31 – February 2, 2006, p. 257-262.
Issue Date: 2006
Publisher: Václav Skala - UNION Agency
Document type: konferenční příspěvek
URI: http://wscg.zcu.cz/WSCG2006/Papers_2006/Full/!WSCG2006_Full_Proceedings_Final.pdf
ISBN: 80-86943-03-8
Keywords: mapování fotonů;globální osvětlení;odhad hustoty
Keywords in different language: photon mapping;global illumination;density estimation
Abstract: The photon map algorithm provides a number of advantages for fast global illumination algorithms. In order to calculate the illumination at each point in a scene, the photon density needs to be estimated. Standard estimation methods will have problems with typical architectural scenes, as walls and corners will lead to undesirable light and shadow leaks. We introduce a new method for estimating photon density in photon maps, that is especially suited for calculating global illumination in architectural scenes. By providing additional information using a limited number of ray-casts, shadow and light leaks can be significantly reduced, thereby resulting in a significant improvement in the speed and accuracy of global illumination algorithms based on photon maps.
Rights: © Václav Skala - UNION Agency
Appears in Collections:WSCG '2006: Full Papers Proceedings

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