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  On Cross-Validation and Resampling of BRDF Data Measurements

Havran, V., Neummann, A., Zotti, G., Purgathofer, W., & Seidel, H.-P. (2005). On Cross-Validation and Resampling of BRDF Data Measurements. In 21st Spring Conference on Computer Graphics (SCCG 2005) (pp. 154-161). Bratislava, Slovakia: Comenius University.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-272C-3 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-272D-1
Genre: Conference Paper

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 Creators:
Havran, Vlastimil1, Author           
Neummann, Attila, Author
Zotti, Georg, Author
Purgathofer, Werner, Author
Seidel, Hans-Peter1, Author           
Jüttler, Bert, Editor
Affiliations:
1Computer Graphics, MPI for Informatics, Max Planck Society, ou_40047              

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 Abstract: We discuss the validation of BTF data measurements by means used for BRDF measurements. First, we show how to apply the Helmholtz reciprocity and isotropy for a single data set. Second, we discuss a cross-validation for BRDF measurement data obtained from two different measurement setups, where the measurements are not calibrated or the level of accuracy is not known. We show the practical problems encountered and the solutions we have used to validate physical setup for four material samples. We describe a novel coordinate system suitable for resampling the BRDF data from one data set to another data set. Further, we show how the perceptually uniform color space CIELab is used for cross-comparison of BRDF data measurements, which were not calibrated.

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Language(s): eng - English
 Dates: 2006-06-192005
 Publication Status: Issued
 Pages: -
 Publishing info: Bratislava, Slovakia : Comenius University
 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 279017
Other: Local-ID: C125675300671F7B-25CADC1936221BA8C12570B300451D4B-Havran2005SCCG
 Degree: -

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Title: Untitled Event
Place of Event: Budmerice, Slovakia
Start-/End Date: 2005-05-12

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Title: 21st Spring Conference on Computer Graphics (SCCG 2005)
Source Genre: Proceedings
 Creator(s):
Affiliations:
Publ. Info: Bratislava, Slovakia : Comenius University
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 154 - 161 Identifier: ISBN: 80-223-2057-9