Now showing items 1-3 of 3

    • An Analytic BRDF for Materials with Spherical Lambertian Scatterers 

      d'Eon, Eugene (The Eurographics Association and John Wiley & Sons Ltd., 2021)
      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 resulting appearance exhibits strong back ...
    • A Position-Free Path Integral for Homogeneous Slabs and Multiple Scattering on Smith Microfacets 

      Bitterli, Benedikt; d'Eon, Eugene (The Eurographics Association and John Wiley & Sons Ltd., 2022)
      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 of the slab allows for significant ...
    • Zero-variance Transmittance Estimation 

      d'Eon, Eugene; Novák, Jan (The Eurographics Association, 2021)
      We apply zero-variance theory to the Volterra integral formulation of volumetric transmittance.We solve for the guided sampling decisions in this framework that produce zero-variance ratio tracking and next-flight ratio ...