Programming and Computer Software

, Volume 42, Issue 6, pp 333–340 | Cite as

Construction of a model of a continuous light source specified by a fixed set of rays

  • D. D. ZhdanovEmail author
  • A. A. Aleinikov
  • A. D. Zhdanov
  • N. B. Deryabin


A physically correct model of a light source specified by a finite set of rays obtained either by processing the measured characteristics of the light source on the Radiant Imaging goniometric system or as a result of the forward stochastic ray tracing in a scene modeling the radiation of a complex light source is constructed. An algorithm for constructing a continuous emitting surface of a light source and its goniometric diagram given a finite set of rays is developed. The model preserves the spectral composition of the source rays in the surface luminance distribution of the radiation light source. An example of the photorealistic rendering of a scene illuminated by a finite set of rays obtained by the computer processing photometric measurement data.


stochastic ray tracing light source Radiant Imaging model spatial luminance distribution spectral radiation 


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Copyright information

© Pleiades Publishing, Ltd. 2016

Authors and Affiliations

  • D. D. Zhdanov
    • 1
    Email author
  • A. A. Aleinikov
    • 1
  • A. D. Zhdanov
    • 2
  • N. B. Deryabin
    • 3
  1. 1.St. Petersburg National Research University of Information Technologies, Mechanics, and OpticsSt. PetersburgRussia
  2. 2.Research and Development Center Informatics and Applied MathematicsMoscowRussia
  3. 3.Keldysh Institute of Applied MathematicsRussian Academy of SciencesMoscowRussia

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