Rapid Material Appearance Acquisition Using Consumer Hardware

0433583 - ÚTIA 2015 RIV CH eng J - Článek v odborném periodiku
Filip, Jiří - Vávra, Radomír - Krupička, Mikuláš
Rapid Material Appearance Acquisition Using Consumer Hardware.
Sensors. Roč. 14, č. 10 (2014), s. 19785-19805. E-ISSN 1424-8220
Grant CEP: GA ČR(CZ) GA14-02652S; GA ČR(CZ) GA14-10911S; GA ČR GAP103/11/0335
Grant ostatní: EC FP7, European Reintegration Grant(BE) 239294
Institucionální podpora: RVO:67985556
Klíčová slova: measurement setup * material appearance * BTF * ABRDF * visual psychophysics
Kód oboru RIV: BD - Teorie informace
Impakt faktor: 2.245, rok: 2014
http://library.utia.cas.cz/separaty/2014/RO/filip-0433583.pdf

A photo-realistic representation of material appearance can be achieved by means of bidirectional texture function (BTF) capturing a material’s appearance for varying illumination, viewing directions, and spatial pixel coordinates. BTF captures many non-local effects in material structure such as inter-reflections, occlusions, shadowing, or scattering. The acquisition of BTF data is usually time and resource-intensive due to the high dimensionality of BTF data. This results in expensive, complex measurement setups and/or excessively long measurement times. We propose an approximate BTF acquisition setup based on a simple, affordable mechanical gantry containing a consumer camera and two LED lights. It captures a very limited subset of material surface images by shooting several video sequences. A psychophysical study comparing captured and reconstructed data with the reference BTFs of seven tested materials revealed that results of our method show a promising visual quality.
Trvalý link: http://hdl.handle.net/11104/0237784