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Evaluating Physical and Rendered Material Appearance
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SYSNO ASEP 0490440 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Evaluating Physical and Rendered Material Appearance Author(s) Filip, Jiří (UTIA-B) RID, ORCID
Kolafová, Martina (UTIA-B)
Havlíček, Michal (UTIA-B) RID
Vávra, Radomír (UTIA-B) RID, ORCID
Haindl, Michal (UTIA-B) RID, ORCID
Rushmeier, H. (US)Number of authors 6 Source Title Visual Computer. - : Springer - ISSN 0178-2789
Roč. 34, 6-8 (2018), s. 805-816Number of pages 11 s. Publication form Print - P Action CGI - Computer Graphics International Event date 11.06.2018 - 14.06.2018 VEvent location Bintan Country ID - Indonesia Event type WRD Language eng - English Country DE - Germany Keywords Material appearance Psychophysics ; Rendering ; BTF ; Perception ; Psychophysics ; MAM2014 Subject RIV BD - Theory of Information OECD category Electrical and electronic engineering R&D Projects GA17-18407S GA ČR - Czech Science Foundation (CSF) Institutional support UTIA-B - RVO:67985556 UT WOS 000433557400006 EID SCOPUS 85046774155 DOI 10.1007/s00371-018-1545-3 Annotation Many representations and rendering techniques have been proposed for presenting material appearance in computer graphics. One outstanding problem is evaluating their accuracy. In this paper, we propose assessing accuracy by comparing human judgements of material attributes made when viewing a computer graphics rendering to those made when viewing a physical sample of the same material. We demonstrate this approach using 16 diverse physical material samples distributed to researchers at the MAM 2014 workshop. We performed two psychophysical experiments. In the first experiment we examined how consistently subjects rate a set of twelve visual, tactile and subjective attributes of individual physical material specimens. In the second experiment, we asked subjects to assess the same attributes for identical materials rendered as BTFs under point-light and environment illuminations. By analyzing obtained data, we identified which material attributes and material types are judged consistently and to what extent the computer graphics representation conveyed the experience of viewing physical material appearance. Workplace Institute of Information Theory and Automation Contact Markéta Votavová, votavova@utia.cas.cz, Tel.: 266 052 201. Year of Publishing 2019
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