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Template-Based Sampling of Anisotropic BRDFs
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SYSNO ASEP 0432894 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Template-Based Sampling of Anisotropic BRDFs Author(s) Filip, Jiří (UTIA-B) RID, ORCID
Vávra, Radomír (UTIA-B) RID, ORCIDNumber of authors 2 Source Title Computer Graphics Forum. - : Wiley - ISSN 0167-7055
Roč. 33, č. 7 (2014), s. 91-99Number of pages 9 s. Publication form Online - E Action Pacific Graphics 2014 Event date 08.10.2014-10.10.2014 VEvent location Soul Country KR - Korea, Republic of Event type WRD Language eng - English Country GB - United Kingdom Keywords BRDF database ; material appearnce ; sampling ; measurement Subject RIV BD - Theory of Information R&D Projects GA14-02652S GA ČR - Czech Science Foundation (CSF) GA14-10911S GA ČR - Czech Science Foundation (CSF) GAP103/11/0335 GA ČR - Czech Science Foundation (CSF) Institutional support UTIA-B - RVO:67985556 UT WOS 000344369200010 EID SCOPUS 84928468371 DOI 10.1111/cgf.12477 Annotation BRDFs are commonly used to represent given materials' appearance in computer graphics and related fields. Although, in the recent past, BRDFs have been extensively measured, compressed, and fitted by a variety of analytical models, most research has been primarily focused on simplified isotropic BRDFs. In this paper, we present a unique database of 150 BRDFs representing a wide range of materials; the majority exhibiting anisotropic behavior. Since time-consuming BRDF measurement represents a major obstacle in the digital material appearance reproduction pipeline, we tested several approaches estimating a very limited set of samples capable of high quality appearance reconstruction. Initially, we aligned all measured BRDFs according to the location of the anisotropic highlights. Then we propose an adaptive sampling method based on analysis of the measured BRDFs. For each BRDF, a unique sampling pattern was computed, given a predefined count of samples. Further, template-based methods are introduced based on reusing of the precomputed sampling patterns. Workplace Institute of Information Theory and Automation Contact Markéta Votavová, votavova@utia.cas.cz, Tel.: 266 052 201. Year of Publishing 2015
Number of the records: 1