Information
- Publication Type: Conference Paper
- Workgroup(s)/Project(s):
- Date: May 2005
- Location: Budmerice, Slovakia
- Lecturer: Vlastimil Havran
- Booktitle: Proceedings SCCG 2005
- Conference date: 12. May 2005 – 14. May 2005
- Pages: 161 – 168
- Keywords: reflectance function, BRDF data acquisition, BRDF data validation, predictive rendering
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.Additional Files and Images
Weblinks
No further information available.BibTeX
@inproceedings{havran-2005-sccg, title = "On Cross-Validation and Resampling of BRDF Data Measurements", author = "Vlastimil Havran and Attila Neumann and Georg Zotti and Werner Purgathofer and Hans-Peter Seidel", year = "2005", 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.", month = may, location = "Budmerice, Slovakia", booktitle = "Proceedings SCCG 2005", pages = "161--168", keywords = "reflectance function, BRDF data acquisition, BRDF data validation, predictive rendering", URL = "https://www.cg.tuwien.ac.at/research/publications/2005/havran-2005-sccg/", }