BRDF Measurement of Highly-Specular Materials using a Goniometer

0486111 - ÚTIA 2018 RIV US eng C - Conference Paper (international conference)
Filip, Jiří - Vávra, Radomír - Maile, F. J.
BRDF Measurement of Highly-Specular Materials using a Goniometer.
Proceedings of the 33rd Spring Conference on Computer Graphics. New York: ACM, 2017 - (Spencer, S.), 13:1-13:9, č. článku 13. ISBN 978-1-4503-5107-2.
[SCCG´17 - 33rd Spring Conference on Computer Graphics 2017. Mikulov (CZ), 15.05.2017-17.05.2017]
R&D Projects: GA ČR GA17-18407S
Institutional support: RVO:67985556
Keywords : BRDF * gloss * material * specular * goniometer * adaptive * measurement * chrome-like appearance * high-reflective * mirror-like coatings
OECD category: Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8)
http://library.utia.cas.cz/separaty/2017/RO/filip-0486111.pdf

Visually accurate capture of appearance of highly specular surfaces is of a great research interest of the coating industry, who strive to introduce highly reflective products while minimizing their production and quality assessment costs, and avoiding environmental issues related to the production process. An efficient measurement of such surfaces is challenging due to their narrow specular peak of an unknown shape and typically very high dynamic range. Such behavior puts higher requirements on capabilities of a measuring device and has impact on length of the measurement process. In this paper, we rely on a material probes with a predefined curved shape featuring slight local inhomogeneities. This defines a goniometric device as appropriate means of appearance capture. To shorten a typically long measurement time required when using these approaches, we introduce a method of material appearance acquisition by means of the isotropic BRDF using relatively sparse sampling adapted to each measured material individually.
Permanent Link: http://hdl.handle.net/11104/0281412