0432894 20240111140852.320141105235959.9 84928468371 000344369200010 10.1111/cgf.12477 9 s. E cav_un_epca*02525490167-7055337 (2014)91-99Wiley BRDF database material appearnce sampling measurement cav_un_auth*0101086 Rozpoznávání obrazu Department of Pattern Recognition RO RO Department of Pattern Recognition Filip Jiří UTIA-B Ústav teorie informace a automatizace AV ČR, v. v. i. cav_un_auth*0282273 Rozpoznávání obrazu Department of Pattern Recognition RO RO Department of Pattern Recognition Vávra Radomír UTIA-B Ústav teorie informace a automatizace AV ČR, v. v. i. hypertextový soubor PDF http://library.utia.cas.cz/separaty/2014/RO/filip-0432894.pdf 15MB cav_un_auth*0303412 GA14-02652S GA ČR CZ cav_un_auth*0303439 GA14-10911S GA ČR CZ cav_un_auth*0273627 GAP103/11/0335 GA ČR BRDFs are commonly used to represent given materials' appearance in computer graphics and related fields. Although, in the recent past, BRDFs have been extensively measured, compressed, and fitted by a variety of analytical models, most research has been primarily focused on simplified isotropic BRDFs. In this paper, we present a unique database of 150 BRDFs representing a wide range of materials; the majority exhibiting anisotropic behavior. Since time-consuming BRDF measurement represents a major obstacle in the digital material appearance reproduction pipeline, we tested several approaches estimating a very limited set of samples capable of high quality appearance reconstruction. Initially, we aligned all measured BRDFs according to the location of the anisotropic highlights. Then we propose an adaptive sampling method based on analysis of the measured BRDFs. For each BRDF, a unique sampling pattern was computed, given a predefined count of samples. Further, template-based methods are introduced based on reusing of the precomputed sampling patterns. cav_un_auth*0307775 Pacific Graphics 2014 08.10.2014-10.10.2014 Soul KR BD 2015 2 4 A 4a 20231122140508.7 RVO:67985556 http://hdl.handle.net/11104/0238335 S COMPUTERSCIENCESOFTWAREENGINEERING 1.237 0.942 Q1 87.556 83.173 Q1 Q1 2014 Soubory v repozitáři: filip-0432894.pdf 84928468371 SCOPUS 000344369200010 WOS hypertextový soubor PDF 15MB cav_un_epca*0252549 Computer Graphics Forum 0167-7055 1467-8659 Roč. 33 č. 7 2014 91 99 Wiley