Reducing Anisotropic BSDF Measurement to Common Practice (English)

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We address the problem of measuring and representing reflection and transmission for anisotropic materials without relying on mathematical models or a large sample database. By eliminating assumptions of material behavior, we arrive at a general method that works for any surface class, from metals to fabrics, fritted glazing, and prismatic films. To make data gathering practical, we introduce a robust analysis method that interpolates a sparse set of incident angle measurements to obtain a continuous function over the full 4-D domain. We then convert this interpolant to a standard representation tailored for efficient rendering and supported by a common library that facilitates data sharing. We conclude with some remaining challenges to making anisotropic BSDF measurements truly practical for rendering

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Statistical Characterization of Surface Reflectance
Havran, Vlastimil / Sbert, Mateu | 2014
Scanning Gonio-Photometers for Asymmetric Acquisition of Fine-structured BSDF
Apian-Bennewitz, Peter | 2014
The Role of Visual Comparison Testing in Material Appearance Modeling
Meyer, Gary | 2014
Linear Transport Theory and Applications to Rendering
Jakob, Wenzel | 2014
The MAM2014 Sample Set
Rushmeier, Holly | 2014
Reducing Anisotropic BSDF Measurement to Common Practice
Ward, Greg / Kurt, Murat / Bonneel, Nicolas | 2014
ALTA: A BRDF Analysis Library
Belcour, Laurent / Barla, Pascal / Pacanowski, Romain | 2014