0384222 20240111140823.420121130235959.9 4 s. P cav_un_epca*0384215978-1-4673-2216-42075-2078PiscatawayIEEE Press2012 Illumination perception texture BTF cav_un_auth*0101086 Filip Jiří Rozpoznávání obrazu Department of Pattern Recognition RO RO UTIA-B Department of Pattern Recognition Ústav teorie informace a automatizace AV ČR, v. v. i. cav_un_auth*0101093 Haindl Michal Rozpoznávání obrazu Department of Pattern Recognition RO RO UTIA-B Department of Pattern Recognition Ústav teorie informace a automatizace AV ČR, v. v. i. cav_un_auth*0286107 Stančík J. SK hypertextový soubor (PDF) http://library.utia.cas.cz/separaty/2012/RO/filip-predicting environment illumination effects on material appearance.pdf 2MB EC Marie Curie ERG 239294 Evropska komise BE 409 CESNET CZ GAP103/11/0335 GA ČR cav_un_auth*0273627 GA102/08/0593 GA ČR cav_un_auth*0239567 Environment illumination is a key to achieving a realistic visualization of material appearance. One way to achieve such an illumination is an approximation by rendering of the material surface lit by a finite set of point light sources. In this paper we employed visual psychophysics to identify a minimal number of point light sources approximating realistic illumination. Furthermore, we analyzed stimuli images and correlation of their statistics with obtained psychophysical data. Finally, image statistics were identified which can predict such a minimal environment representation for three tested materials, depending on the visual properties of the illumination environment. cav_un_auth*0286092 ICPR 2012 - The 21st International Conference on Pattern Recognition Tsukuba 11.11.2012-15.11.2012 JP 2013 BD 3 PR RVO:67985556 http://hdl.handle.net/11104/0007450 2012 hypertextový soubor (PDF) 2MB cav_un_epca*0384215 Proceedings of the 21st International Conference on Pattern Recognition (ICPR2012) 978-1-4673-2216-4 2075 2078 Piscataway IEEE Press 2012 IEEE Catalog Number : CFP12182-USB