The Hemisphere Radiosity Method: A Tale of Two Algorithms

  • Stephen N. Spencer
Part of the EurographicSeminars book series (FOCUS COMPUTER)


The most important and most computationally-intensive operation within the radiosity illumination model is the calculation of form-factors, the geometric measure of the fraction of the radiant energy leaving one surface and received by another surface. This form-factor calculation must account for potential obstructions between the target surfaces yet be computationally efficient and accurate.


Form Factor Surface Element Test Element Discrete Area Orthographic Projection 
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]
    Cohen, M. E., Greenberg, D. P.: The hemi-cube: A radiosity solution for complex environments. Proceedings of SIGGRAPH 1985 (ACM Computer Graphics), 19 (3): 31–40, July 1985.CrossRefGoogle Scholar
  2. [2]
    Goldfeather, J.: Progressive radiosity using hemispheres. Technical Report TR89–002, University of North Carolina at Chapel Hill, 1989.Google Scholar
  3. [3]
    Goral, C. M., Torrance, K. E., Greenberg, D. P., Battaile, B.: Modeling the Interaction of Light Between Diffuse Surfaces. Proceedings of SIGGRAPH 1984 (ACM Computer Graphics), 18 (3): 213–222, July 1984.CrossRefGoogle Scholar
  4. [4]
    Siegel, R., Howell, J. R.: Thermal Radiation Heat Transfer. Hemisphere Publishing Corporation, 1981.Google Scholar
  5. [5]
    Spencer, S. N.: The Hemisphere Radiosity Method for Computer-Generated Images. Master’s thesis, The Ohio State University, August 1988.Google Scholar
  6. [6]
    Van Wyk, Jr., Christopher G.: A Geometry-Based Insolation Model for Computer-Aided Design. PhD thesis, The University of Michigan, 1988.Google Scholar
  7. [7]
    Wallace, J. R., Elmquist, K. A., Haines, E. A.: A Ray Tracing Algorithm for Progressive Radiosity. Proceedings of SIGGRAPH 1989 (ACM Computer Graphics), 23 (3): 315–324, August 1989.CrossRefGoogle Scholar
  8. [8]
    Weibelt, J. A.: Engineering Radiative Heat Transfer. Holt, Rinehart, and Winston, 1966.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1992

Authors and Affiliations

  • Stephen N. Spencer
    • 1
  1. 1.The Advanced Computing Center for the Arts and DesignThe Ohio State UniversityColumbusUSA

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