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On uniform resampling and gaze analysis of bidirectional texture functions

SYSNO ASEP	0329829
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Ostatní články
Title	On uniform resampling and gaze analysis of bidirectional texture functions
Title	Analýza plošného podvzorkování dvojsměrných texturních funkcí a fixací pohledu při jejich pozorování
Author(s)	Filip, Jiří (UTIA-B)_{RID, ORCID} Chantler, M.J. (GB) Haindl, Michal (UTIA-B)_{RID, ORCID}
Source Title	ACM Transactions on Applied Perception. - : Association for Computing Machinery - ISSN 1544-3558 Roč. 6, č. 3 (2009), s. 1-15
Number of pages	16 s.
Publication form	www - www
Language	eng - English
Country	US - United States
Keywords	BTF ; texture ; eye tracking
Subject RIV	BD - Theory of Information
R&D Projects	1M0572 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	GA102/08/0593 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z10750506 - UTIA-B (2005-2011)
DOI	doi.acm.org/10.1145/1577755.1577761
Annotation	The use of illumination and view-dependent texture information is recently the best way to capture the appearance of real-world materials accurately. One example is the Bidirectional Texture Function. The main disadvantage of these data is their massive size. In this article, we employ perceptually-based methods to allow more efficient handling of these data. In the first step, we analyse different uniform resampling by means of a psychophysical study with 11 subjects, comparing original data with rendering of a uniformly resampled version over the hemisphere of illumination and view-dependent textural measurements. We have found that down-sampling in view and illumination azimuthal angles is less apparent than in elevation angles and that illumination directions can be down-sampled more than view directions without loss of visual accuracy. In the second step, we analyzed subjects gaze fixation during the experiment.
Workplace	Institute of Information Theory and Automation
Contact	Markéta Votavová, votavova@utia.cas.cz, Tel.: 266 052 201.
Year of Publishing	2010

Number of the records: 1