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Questions tagged [scattering]

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15 votes
1 answer

Radiosity VS Ray tracing

Radiosity is basically what allows this: In a tutorial of Cornell University about Radiosity it is mentioned that: A ray-traced version of the image shows only the light reaching the viewer by ...
Armfoot's user avatar
  • 615
12 votes
1 answer

Volumetric rendering fundamental concepts and terminology

Literature on rendering volumetric materials and effects tends to use a lot of mathematical physics terminology. Let's say that I have a decent handle on the concepts involved in surface rendering. ...
John Calsbeek's user avatar
10 votes
1 answer

How does Smith multiple scattering interact with diffuse subsurface scattering?

The Multiple Scattering Microfacet BSDFs with the Smith Model paper describes a statistical model for replacing the masking-shadowing functions in microfacet BSDFs (which account for paths with more ...
John Calsbeek's user avatar
3 votes
0 answers

Predicting reflectance functions from complex surfaces

There are three principal ways to obtain a BRDF. We can Derive an analytic formula using physical principles Use simulation given an assumed or measured model of the surface microgeometry Measure the ...
Arjan Singh's user avatar
  • 2,511
1 vote
0 answers

Term confusion about volume scattering

We have two different terms, for example, let's talk about scattering only. Scattering coefficient Scattering cross-section These two terms are supposed to have different physical meaning. I read it ...
Enigmatisms's user avatar
1 vote
0 answers

Adding Ozone to my sky simulation

I implemented a simulation for the colour of the sky a while ago by following the scratch a pixel tutorial: I ...
Maria's user avatar
  • 11