[Zurück]

A. Wilkie, R.F. Tobler, C. Ulbricht, G. Zotti, W. Purgathofer:
"An Analytical Model for Skylight Polarisation";
Vortrag: Eurographics Symposium on Rendering 2004, Norrköping, Sweden; 21.06.2004 - 23.06.2004; in: "Proceedings of the Eurographics Symposium on Rendering", A. Keller, H Jensen (Hrg.); ACM, (2004), ISBN: 3-905673-12-6; S. 387 - 399.

Under certain circumstances the polarisation state of the illumination can have a significant influence on the appearance of scenes; outdoor scenes with specular surfaces -- such as water bodies or windows -- under clear, blue skies are good examples of such environments. In cases like that it can be essential to use a polarising renderer if a true prediction of nature is intended, but so far no polarising skylight models have been presented. This paper presents a plausible analytical model for the polarisation of the light emitted from a clear sky. Our approach is based on a suitable combination of several components with well-known characteristics, and yields acceptable results in considerably less time than an exhaustive simulation of the underlying atmospheric scattering phenomena would require.

http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC04968530

http://www.cg.tuwien.ac.at/research/publications/2004/Wilkie-2004-AMS/

Projektleitung Alexander Wilkie:
Physikalisch plausible Darstellung des Himmelsgewölbes