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cs.GR2022
A Position-Free Path Integral for Homogeneous Slabs and Multiple Scattering on Smith Microfacets
Benedikt Bitterli, Eugene d'Eon
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 symmetry…
cs.GR2021
An analytic BRDF for materials with spherical Lambertian scatterers
Eugene d'Eon
We present a new analytic BRDF for porous materials comprised of spherical Lambertian scatterers. The BRDF has a single parameter: the albedo of the Lambertian particles. The resul…
cs.GR2021
An unbiased ray-marching transmittance estimator
Markus Kettunen, Eugene d'Eon, Jacopo Pantaleoni +1
We present an in-depth analysis of the sources of variance in state-of-the-art unbiased volumetric transmittance estimators, and propose several new methods for improving their eff…