Title: A Compression Method For Spectral Photon Map Rendering
Authors: Lai, Gorm
Christensen, Niels Jørgen
Citation: WSCG '2007: Short Communications Proceedings: The 15th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision 2007 in co-operation with EUROGRAPHICS: University of West Bohemia, Plzen, Czech Republic, January 29 – February 1, 2007, p. 95-102.
Issue Date: 2007
Publisher: Václav Skala - UNION Agency
Document type: konferenční příspěvek
URI: http://wscg.zcu.cz/wscg2007/Papers_2007/short/!WSCG2007_Short_Proceedings_Final-Part_1.zip
ISBN: 978-80-86943-02-2
Keywords: globální osvětlení;mapování fotonů;spektrální rozložení výkonů;vykreslování;Monte Carlo;refrakce;zobrazovací rovnice
Keywords in different language: global illumination;photon mapping;spectral power distribution;rendering;Monte Carlo;refraction;rendering equation
Abstract: The photon map method can easily be extended to handle wavelength-dependent phenomena such as dispersion, chromatic aberration, etc. Using the computationally effective approach of point sampling for this extension, the size of the photon map is increased proportionally with the number of samples. In this paper we present a solution for modelling wavelength-dependent phenomena that keeps variance low, while having a memory usage comparable to that of an RGB based renderer. The method is best used for photon mapping, where there is a need to store large amounts of spectral flux directly in the photon map. Our method incurs a slight loss of accuracy for photons in the global map, while photons in the caustics map retain all information. Our tests show negligible loss of accuracy in the image quality.
Rights: © Václav Skala - UNION Agency
Appears in Collections:WSCG '2007: Short Communications Proceedings

Files in This Item:
File Description SizeFormat 
Lai.pdfPlný text1,29 MBAdobe PDFView/Open
Lai_prezentace.pptPrezentace1,5 MBMicrosoft PowerpointView/Open

Please use this identifier to cite or link to this item: http://hdl.handle.net/11025/11168

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.