A radiosity approach for the simulation of daylight

  • S. Müller
  • W. Kresse
  • N. Gatenby
  • F. Schöffel
Conference paper
Part of the Eurographics book series (EUROGRAPH)


In this paper, an extension to the radiosity method, for the simulation of daylight, is presented. The sky hemisphere around the scene is subdivided into a set of sky patches. By defining a location on the earth, a time of day and the weather conditions (e.g., clear sky, overcast, partly cloudy) a sky model (e.g., CIE or Perez) is applied to compute the radiosity values for each sky patch. In a radiosity preprocess, the sky patches are regarded as shooting patches and are treated first. By storing the form factors within this preprocess, all parameters of the sky model can be modified and updated very quickly. Thus, a designer can see the lighting variation throughout a typical day by calling the costly form factor computation only once.


Form Factor Visible Section Nearby Building Band Source Daylight Simulation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. 1.
    Campbell A.T., Fussell D.S., “Adaptive Mesh Generation for Global Diffuse Illumination”, ACM Computer Graphics (SIGGRAPH ’90 Proceedings), Vol. 24, No. 3, August 1990, pp. 155–164.CrossRefGoogle Scholar
  2. 2.
    CIE Technical Committee 4.2. Standardization of luminance on clear skies. CIE Publication No. 22, Commission International de l’clairaze, Paris, 1973.Google Scholar
  3. 3.
    Cohen M.F., Greenberg D.P.: “The Hemi-Cube: A Radiosity Solution for Complex Environments”, ACM Computer Graphics (SIGGRAPH ’85 Proceedings), Vol. 19, No. 3, July 1985, pp. 31–40.CrossRefGoogle Scholar
  4. 4.
    Cohen M.F., Greenberg D.P., Immel D.S., Brock P.J.: “An Efficient Radiosity Approach for Realisitic Image Synthesis”, IEEE CG&A, Vol. 6, No. 2, March 1986, pp. 26–35.CrossRefGoogle Scholar
  5. 5.
    Dobashi Y., Kaneda K., Nakashima T., Yamashita H., Nishita T., Tadamura K.: “Skylight for Interior Lighting Design”, Computer Graphics Forum (EUROGRAPHICS ’94), Vol. 13, No. 3, 1994, pp. C-85–C-96.Google Scholar
  6. 6.
    Gatenby N.: Optimising Discontinuity Meshing Radiosity, ph. d thesis at the University of Manchester, 1995.Google Scholar
  7. 7.
    Hanrahan P., D. Salzman, L. Aupperle: “A Rapid Hierarchical Radiosity Algorithm”, ACM Computer Graphics (SIGGRAPH VI Proceedings), Vol. 25, No. 4, July 1991, pp. 197–206.CrossRefGoogle Scholar
  8. 8.
    Lischinski D., Tampieri F., Greenberg D.P.: “Combining Hierarchical Radiosity and Discontinuity Meshing”, ACM Computer Graphics (SIGGRAPH ’93 Proceedings), Vol. 24, No. 3, August 1993, pp. 199–208.Google Scholar
  9. 9.
    Lischinski D., Tampieri F., Greenberg D.P.: “Discontinuity Meshing for Accurate Radiosity”, IEEE CG&A, Vol. 12, No. 6, November 1993, pp. 25–39.Google Scholar
  10. 10.
    Nimeroff J.S., Simoncelli E., Dorsey J.: “Efficient Re-rendering of Naturally Illuminated Environments”, in Fifth Eurographics Workshop on Rendering ( Darmstadt, Germany, June 1995 ), pp. 359–373.Google Scholar
  11. 11.
    Nishita T., Nakamae E.: “Continuous Tone Representation of Three-Dimensional Objects Illuminated by Sky Light”, ACM Computer Graphics (SIGGRAPH ’86 Proceedings), Vol. 20, No. 4, August 1986, pp. 125–132.CrossRefGoogle Scholar
  12. 12.
    Perez R., Seals R., Michalsky J.: “All-Weather Model for Sky Luminance Distribution — Preliminary Configuration and Validation”, Solar Energy, Vol. 50, No. 3, 1993, pp. 235–245.CrossRefGoogle Scholar
  13. 13.
    Tadamura K., Nakamae E., Kaneda K., Baba M., Yamashita H., Nishita T.: “Modeling of Skylight and Rendering of Outdoor Scenes”, Computer Graphics Forum (EUROGRAPHICS ’93), Vol. 12, No. 3, 1993, pp. C-189–C-200.Google Scholar
  14. 14.
    Tregenza P.R.: “Subdivision of the sky hemisphere for luminance measurements”, Lighting Research and Technology, Vol. 19, 1987, pp. 13–14.CrossRefGoogle Scholar
  15. 15.
    Wallace, John R., Kells A. Elmquist, Eric A. Haines: “A Ray Tracing Algorithm For Progressive Radiosity,” ACM Computer Graphics (SIGGRAPH ’89 Proceedings), Vol. 23, No. 3, July 1989, pp. 315–324.CrossRefGoogle Scholar
  16. 16.
    Ward G.J.: “The radiance lighting simulation system”, SIGGRAPH ’92 Global Illumination Course Notes, ACM Press, July 1992.Google Scholar

Copyright information

© Springer-Verlag/Wien 1995

Authors and Affiliations

  • S. Müller
    • 1
  • W. Kresse
    • 1
  • N. Gatenby
    • 1
    • 2
  • F. Schöffel
    • 1
  1. 1.Fraunhofer Institute for Computer GraphicsDarmstadtGermany
  2. 2.Computer Graphics UnitUniversity of ManchesterUK

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