Programming and Computer Software

, Volume 32, Issue 5, pp 284–297 | Cite as

Simulation of natural daylight illumination determined by a high dynamic range image

  • A. G. Voloboi
  • V. A. Galaktionov
  • E. A. Kopylov
  • L. Z. Shapiro


The use of high dynamic range images as a source of the natural daylight illumination and a background for virtual scenes containing objects with complex optic properties (fabrics, automobile multilayer paints, etc.) is considered. Physically justified algorithms for calculating the luminance of a point, recognition of the sun, generation of shadows, and background specification are considered. An analysis of the correctness of the available high dynamic range images is performed, and their drawbacks are discussed. Modifications of the algorithms are developed that correct these drawbacks in the case of simulating the illumination based on the sky models adopted by the International Commission on Illumination (CIE). The modified illumination simulation algorithms make it possible to produce more accurate images; moreover, they are automatic, and robust with respect to errors in high dynamic range images. These algorithms are used in several computer graphics systems for generating realistic images. A version of this paper with color figures can be found at


Realistic Image Panoramic Image Global Illumination High Dynamic Range Image Virtual Plane 
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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Copyright information

© Pleiades Publishing, Inc. 2006

Authors and Affiliations

  • A. G. Voloboi
    • 1
  • V. A. Galaktionov
    • 1
  • E. A. Kopylov
    • 1
  • L. Z. Shapiro
    • 1
  1. 1.Keldysh Institute of Applied MathematicsRussian Academy of SciencesMoscowRussia

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