A Six-flux Transfer Approach for Efficient Layered Materials Rendering

Abstract

Figure 1: The model of Belcour [Belcour 2018] suffers from severe energy losses with scattering volumes due to its singlescattering approximation and its lack of support for back-scattering. Our transfer matrix approach overcomes these issues and provides results close to the ground-truth computed with Guo’s stochastic approach [Guo et al. 2018]. In these examples, a unit depth non-absorbing medium with scattering coefficient σs = 0.755 and varying Henyey-Greenstein (HG) д parameters lies on top of a smooth gold substrate. HG д asymmetry parameter is respectively set to 0.9 and to 0 in the left and right inset.