Název: A Portable Setup for Fast Material Appearance Acquisition
Autoři: Filip, Jiří ; Vávra, Radomír ; Krupička, Mikuláš
Typ dokumentu: Výzkumné zprávy
Rok: 2014
Jazyk: eng
Edice: Research Report, svazek: 2342
Abstrakt: 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.
Klíčová slova: ABRDF; BTF; material appearance; measurement setup; visual psychophysics
Číslo projektu: 239294, GA14-02652S (CEP), GAP103/11/0335 (CEP)
Poskytovatel projektu: EC FP7, European Reintegration Grant, GA ČR, GA ČR

Instituce: Ústav teorie informace a automatizace AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný na externích webových stránkách.
Externí umístění souboru: http://library.utia.cas.cz/separaty/2014/RO/filip-0430591.pdf
Původní záznam: http://hdl.handle.net/11104/0236063

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-175199


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav teorie informace a automatizace
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