Browsing by Subject "Computing methodologies --> Reflectance modeling"

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    • Importance Sampling of Glittering BSDFs based on Finite Mixture Distributions 

      Chermain, Xavier; Sauvage, Basile; Dischler, Jean-Michel; Dachsbacher, Carsten (The Eurographics Association, 2021)
      We propose an importance sampling scheme for the procedural glittering BSDF of Chermain et al. [CSDD20]. Glittering BSDFs have multi-lobe visible normal distribution functions (VNDFs) which are difficult to sample. They ...

    • 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 ...