Original title: Towards Effective Measurement and Interpolation of Bidirectional Texture Functions
Authors: Filip, Jiří
Document type: Research reports
Year: 2011
Language: eng
Series: Research Report, volume: 2298
Abstract: Bidirectional texture function (BTF) is acquired by taking thousands of material surface images for different illumination and viewing directions. This function, provided it is measured accurately, is typically exploited for visualization of material appearance in visual accuracy demanding applications. However, accurate measurement of the BTF is time and resources demanding task. While the sampling of illumination and viewing directions is in all known measurement systems done uniformly, we believe that to be more effective the sampling should be tailored specifically to reflectance properties of materials to be measured. Hence, we introduce a novel method of sparse BTF sampling. The method starts with collecting information about material visual behavior by means of small initial subset of reflectance samples measurement and analysis. This information is fed into our heuristic algorithm producing sparse material dependent sampling that is consequently used for BTF measurement and interpolation.
Keywords: bidirectional texture function; illumination; measurement systems
Project no.: CEZ:AV0Z10750506 (CEP), 306, 387, 239294, GA102/08/0593 (CEP), 103/11/0335
Funding provider: fond rozvoje sdružení CESNET, fond rozvoje sdružení CESNET, GA ČR, GA ČR

Institution: Institute of Information Theory and Automation AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0196827

Permalink: http://www.nusl.cz/ntk/nusl-42753


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