On Cross-Validation and Resampling of BRDF Data Measurements

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• Publication Type: Conference Paper
• Date (from): 12.5.
• Date (to): 14.5.
• Lecturer: V. Havran
• Location: Budmerice, Slovakia
• Keywords: reflectance function, BRDF data acquisition, BRDF data validation, predictive rendering

@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.",
  pages =      "161--168",
  month =      may,
  booktitle =  "Proceedings SCCG 2005",
  location =   "Budmerice, Slovakia",
  keywords =   "reflectance function, BRDF data acquisition, BRDF data
               validation, predictive rendering",
  URL =        "http://www.cg.tuwien.ac.at/research/publications/2005/havran-2005-sccg/",
}