Title: A Critical Review of the Preetham Skylight Model
Authors: Zotti, Georg
Wilkie, Alexander
Purgathofer, Werner
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. 23-30.
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_2.zip
ISBN: 978-80-86943-02-2
Keywords: model osvětlení oblohy;verifikace
Keywords in different language: sky luminance model;verification
Abstract: The Preetham skylight model is currently one of the most widely used analytic models of skylight luminance in computer graphics. Despite its widespread use, very little work has been carried out to verify the results generated by the model, both in terms of the luminance patterns it generates, and in terms of numerical reliability and stability. In this paper, we show where the model exhibits problematic behaviour, and compare the computed luminance values with the CIE 2003 Standard General Sky, and our own measurements of real, cloudless skies.
Rights: © Václav Skala - UNION Agency
Appears in Collections:WSCG '2007: Short Communications Proceedings

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Please use this identifier to cite or link to this item: http://hdl.handle.net/11025/11160

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