Title: Progressive Light Path Building
Authors: Szirmay-Kalos, Lászlo
Antal, György
Sbert, Mateu
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.411-418.
Issue Date: 2001
Publisher: University of West Bohemia
Document type: konferenční příspěvek
URI: http://wscg.zcu.cz/wscg2001/Papers_2001/R126.ps
ISBN: 80-7082-713-0
ISSN: 1213-6972
Keywords: globální osvětlení;stochastická iterace;trasování světla
Keywords in different language: global illumination;stochastic iteration;light-tracing
Abstract: The paper proposes a global illumination method that builds up the light paths progres-sively taking into account all relevant previous information. The basis of the method is a self-correcting stochastic iteration scheme, which works with a population of photon hits. In each iteration step a ray is generated randomly either from a light source or by reflect-ing an earlier hit, then the ray is traced to obtain a new hit. In order to limit the size of the hit population, hits are decimated randomly after certain iteration steps. Comparing the new approach to random walk techniques, this method can reuse the illumination and visibility information gathered with previous rays. By defining the decimation strategy properly, the view-importance can be built into the algorithm.
Rights: © University of West Bohemia
Appears in Collections:WSCG '2001: Conference proceedings

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Please use this identifier to cite or link to this item: http://hdl.handle.net/11025/11296

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