In the past decades, Monte Carlo methods have shown their ability to solve PDEs,
independently of the dimensionality of the integration domain and for different use-cases (eg …

We consider the problem of multiple scattering on Smith microfacets. This problem is
equivalent to computing volumetric light transport in a homogeneous slab. Although the …

Reflectance models capture many types of visual appearances. The most plausible
reflectance models follow the Microfacet theory, which is specifically based on statistical …

The constellation of Earth-observing satellites continuously collects measurements of
scattered radiance, which must be transformed into geophysical parameters in order to …

The conventional approach to appearance prediction for 3D printed parts is to print a thin
slab of material and measure its reflectance or transmittance with a spectrophotometer …

Microfacet models suffer from a significant limitation: they are not energy preserving,
resulting in an unexpected darkening of rough specular surfaces. Energy compensation …

Smith microfacet models are widely used in computer graphics to represent materials.
Traditional microfacet models do not consider the multiple bounces on microgeometries …

Classical microfacet theory suffers from energy loss on materials with high roughness due to
the single bounce assumption of most microfacet models. When roughness is high, there is …

Sampling according to a visible normal distribution function (VNDF) is often used to sample
rays scattered by glossy surfaces, such as the Smith-GGX microfacet model. However, for …

Parametric Bidirectional Scattering Distribution Functions (BSDFs) are pervasively used
because of their flexibility to represent a large variety of material appearances by simply …