Perceptually Motivated BRDF Comparison using Single Image

0460400 - ÚTIA 2017 RIV GB eng J - Článek v odborném periodiku
Havran, V. - Filip, Jiří - Myszkowski, K.
Perceptually Motivated BRDF Comparison using Single Image.
Computer Graphics Forum. Roč. 35, č. 4 (2016), s. 1-12. ISSN 0167-7055. E-ISSN 1467-8659
Grant CEP: GA ČR(CZ) GA14-02652S
Institucionální podpora: RVO:67985556
Klíčová slova: BRDF * metric * distortion
Kód oboru RIV: BD - Teorie informace
Impakt faktor: 1.611, rok: 2016
http://library.utia.cas.cz/separaty/2016/RO/filip-0460400.pdf

Surface reflectance of real-world materials is now widely represented by the bidirectional reflectance distribution function (BRDF) and also by spatially varying representations such as SVBRDF and the bidirectional texture function (BTF). The raw surface reflectance measurements are typically compressed or fitted by analytical models, that always introduce a certain loss of accuracy. For its evaluation we need a distance function between a reference surface reflectance and its approximate version. Although some of the past techniques tried to reflect the perceptual sensitivity of human vision, they have neither optimized illumination and viewing conditions nor surface shape. In this paper, we suggest a new image-based methodology for comparing different anisotropic BRDFs. We use optimization techniques to generate a novel surface which has extensive coverage of incoming and outgoing light directions, while preserving its features and frequencies that are important for material appearance judgments.
Trvalý link: http://hdl.handle.net/11104/0260700