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Using Reflectors for Analysis and Acquisition of Anisotropic BRDF
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SYSNO ASEP 0462402 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Using Reflectors for Analysis and Acquisition of Anisotropic BRDF Author(s) Filip, Jiří (UTIA-B) RID, ORCID
Vávra, Radomír (UTIA-B) RID, ORCIDNumber of authors 2 Source Title Proceedings of the 4th CIE Expert Symposium on Colour and Visual Appearance. - Vienna : Commission Internationale de L'Eclairage CIE Central Bureau, 2016 - ISBN 978-3-902842-59-6 Pages s. 155-162 Number of pages 8 s. Publication form Medium - C Action The 4th CIE Expert Symposium on Colour and Visual Appearance Event date 06.09.2016-07.09.2016 VEvent location Praha Country CZ - Czech Republic Event type WRD Language eng - English Country AT - Austria Keywords BRDF measurement ; anisotropic ; reflector ; ellipsoidal ; parabolic Subject RIV BD - Theory of Information R&D Projects GA14-02652S GA ČR - Czech Science Foundation (CSF) Institutional support UTIA-B - RVO:67985556 Annotation BRDFs are commonly used for material appearance representation in applications ranging from gaming and the movie industry, to product design and specification. Most applications rely on isotropic BRDFs due to their better availability as a result of their easier acquisition process. On the other hand, anisotropic BRDF due to their structure-dependent anisotropic highlights, are more challenging to measure and process. This paper describes approaches to BRDF analysis and acquisition using ellipsoidal and parabolic reflectors commonly used for in illumination industry. First, we show how reflectors can be used for detection of anisotropic properties as anisotropic axes and highlight width. Second, we outline and approach for anisotropic BRDF capture using reflector that allows fast and convenient measurement without need of measured sample extraction. Workplace Institute of Information Theory and Automation Contact Markéta Votavová, votavova@utia.cas.cz, Tel.: 266 052 201. Year of Publishing 2017
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