Construction of a model of a continuous light source specified by a fixed set of rays
- 51 Downloads
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.
Keywordsstochastic ray tracing light source Radiant Imaging model spatial luminance distribution spectral radiation
Unable to display preview. Download preview PDF.
- 1.Voloboy, A.G. and Galaktionov, V.A., Computer graphics as an efficient tool in the development of modern technologies, Trudy 23 Mezhdunarodnoi konferentsii po komp’yuternoi grafike n zreniyu (Proc. of the 23rd Int. Cnf. on Computer Graphics and Vision) (Dal’nevostoch. Federal’nyi Univ., 2013), pp. 186–190.Google Scholar
- 3.Laouadi, A. and Saber, H.H., Performance of Tubular Daylighting Devices, NRC CONSTRUCTION TECHNOLOGY UPDATE, National Research Council of Canada, 2014, no. 82.Google Scholar
- 4.Radiant Vision Systems SIG-400, http://www.radiantvisionsystems.com/products/sig-400Google Scholar
- 5.Zhdanov, D.D., Garbul’, A.A., Voloboy, A.G., Galaktionov, V.A., Ershov, S.V., Potemin, I.S., and Sokolov, V.G., A photorealistic model of volume scattering in the problem of bidirectional stochastic ray tracing, Trudy 24 mezhdunarodnoi konferetsii po komp’yuternoi grafike i machinnomu zreniyu GrafiKon'2014 (Proc. of the 24th Int. Conf. on Computer Graphics and Computer Vision), Rostov-on-Don, 2014, pp. 38–42.Google Scholar
- 6.Wald, I. and Havran, V., On building fast kd-trees for ray tracing, and on doing that in O(N log N), RT06 conference, Salt Lake City, 2006, pp. 61–69.Google Scholar
- 7.Shepard, D., A two-dimensional interpolation function for irregularly-spaced data, 23rd ACM National Conference (ACM’68), New York, 1968, pp. 517–524.Google Scholar
- 8.Lumicept: Hybrid Light Simulation Software, http://www.integra.jp/enGoogle Scholar