title: Spectral BRDF-based determination of proper measurement geometries to characterize color shift of special effect coatings.
abstract: A reduced set of measurement geometries allows the spectral reflectance of special effect coatings to be predicted for any other geometry. A physical model based on flake-related parameters has been used to determine nonredundant measurement geometries for the complete description of the spectral bidirectional reflectance distribution function (BRDF). The analysis of experimental spectral BRDF was carried out by means of principal component analysis. From this analysis, a set of nine measurement geometries was proposed to characterize special effect coatings. It was shown that, for two different special effect coatings, these geometries provide a good prediction of their complete color shift.
authors: Instituto de Óptica, Consejo Superior de Investigaciones Científicas (CSIC), Madrid 28006, Spain. alejandro.ferrero@csic.es
authors: Alejandro
authors: A
authors: Ferrero
authors: Ana
authors: A
authors: Rabal
authors: Joaquín
authors: J
authors: Campos
authors: Francisco
authors: F
authors: Martínez-Verdú
authors: Elísabet
authors: E
authors: Chorro
authors: Esther
authors: E
authors: Perales
authors: Alicia
authors: A
authors: Pons
authors: María Luisa
authors: ML
authors: Hernanz
mesh_terms: D003116:Color; D008962:Models, Theoretical; D055620:Optical Phenomena; D025341:Principal Component Analysis; D013057:Spectrum Analysis