Publication details

BRDF Interpolation using Anisotropic Stencils

Conference Paper (international conference)

Vávra Radomír, Filip Jiří

serial: IS&T International Symposium on Electronic Imaging 2016 , Eds: Imai F., Ortiz Segovia M., Urban P.

action: IS&T International Symposium on Electronic Imaging 2016, Measuring, Modeling, and Reproducing Material Appearance 2016, (San Francisco, US, 14.2.2016-18.2.2016)

project(s): GA14-02652S, GA ČR

keywords: BRDF, stencil, anisotropic, interpolation

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abstract (eng):

Fast and reliable measurement of material appearance is crucial for many applications ranging from virtual prototyping to visual quality control. The most common appearance representation is BRDF capturing illumination- and viewing-dependent reflectance. One of the approaches to rapid BRDF measurement captures its subspace, using so called slices, by continuous movements of a light and camera in azimuthal directions, while their elevations remain fixed. This records set of slices in the BRDF space while remaining data are unknown. We present a novel approach to BRDF reconstruction based on a concept of anisotropic stencils interpolating values along predicted locations of anisotropic highlights. Our method marks an improvement over the original linear interpolation method, and thus we ascertain it to be a promising variant of interpolation from such sparse yet very effective measurements.