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Construction of a model of a continuous light source specified by a fixed set of rays |
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| Authors: | D D Zhdanov A A Aleinikov A D Zhdanov N B Deryabin |
| Affiliation: | 1.St. Petersburg National Research University of Information Technologies, Mechanics, and Optics,St. Petersburg,Russia;2.Research and Development Center Informatics and Applied Mathematics,Moscow,Russia;3.Keldysh Institute of Applied Mathematics,Russian Academy of Sciences,Moscow,Russia |
| Abstract: | 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. |
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