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Adaptive ray marching Better for non-homogeneous media - change in extinction coefficient Varies length of step size on the fly Ideally little change of extinction coefficient & density (albedo) within a step
Photon Tracing Requires photon map for participating media and subsurface scattering Volume (rather than surface) photon map Exclude photons coming directly from light source (separate out direct illumination)
Page 1 and 2: Participating Media Valerie Szudzie
Page 3 and 4: Light scattering Photon can continu
Page 5 and 6: Light scattering Increased radiance
Page 7 and 8: Volume rendering equation L(x, ⃗
Page 9 and 10: Phase Functions anisotropic scatter
Page 11 and 12: Raleigh Scattering p(θ) = 3 16π (
Page 13 and 14: Henyey-Greenstein ellipsoid-shaped
Page 15: Ray marching Solves volume renderin
Page 20: Rendering Smoke Uses fluid flow equ
Page 23 and 24: glass sphere, fog medium
Page 26 and 27: Rendering Translucent Material Can
Page 28: References Jensen: Realistic Image

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