Počet záznamů: 1
A Portable Setup for Fast Material Appearance Acquisition
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SYSNO ASEP 0430591 Druh ASEP V - Výzkumná zpráva Zařazení RIV Záznam nebyl označen do RIV Název A Portable Setup for Fast Material Appearance Acquisition Tvůrce(i) Filip, Jiří (UTIA-B) RID, ORCID
Vávra, Radomír (UTIA-B) RID, ORCID
Krupička, Mikuláš (UTIA-B) RIDVyd. údaje Praha: ÚTIA AV ČR, 2014 Edice Research Report Č. sv. edice 2342 Poč.str. 7 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova measurement setup ; BTF ; ABRDF ; visual psychophysics ; material appearance Vědní obor RIV BD - Teorie informace CEP GA14-02652S GA ČR - Grantová agentura ČR GAP103/11/0335 GA ČR - Grantová agentura ČR Institucionální podpora UTIA-B - RVO:67985556 Anotace 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. Pracoviště Ústav teorie informace a automatizace Kontakt Markéta Votavová, votavova@utia.cas.cz, Tel.: 266 052 201. Rok sběru 2015
Počet záznamů: 1