A radiative transfer framework for non-exponential media Benedikt - PowerPoint PPT Presentation

Summary • In correlated media, transmittance becomes four functions • These represent different interactions at the end points • Given one, all others can be derived • This talk: High level overview � 28

Summary • In correlated media, transmittance becomes four functions • These represent different interactions at the end points • Given one, all others can be derived • This talk: High level overview • Paper: Rigorous derivation � 28

Modelling Transmittance � 29

Modelling Transmittance Data Driven � 29

Modelling Transmittance Data Driven A Data-Driven Reflectance Model, Matusik et al., 2003 � 29

Modelling Transmittance Data Driven A Data-Driven Reflectance Model, A Microfacet-based BRDF Generator, Matusik et al., 2003 Ashikhmin et al., 2000 � 29

Transmittance e − τ � 30

Modelling Transmittance Phenomenological � 31

Modelling Transmittance Phenomenological Models of Light Reflection For Illumination for Computer Computer Synthesized Pictures Generated Pictures, James F. Blinn, 1977 Bui Tuong Phong, 1975 � 31

Modelling Transmittance Phenomenological Models of Light Reflection For Illumination for Computer Computer Synthesized Pictures Generated Pictures, James F. Blinn, 1977 Bui Tuong Phong, 1975 � 31

Modelling Transmittance Data Driven Phenomenological � 32

Modelling Transmittance Data Driven Statistical Models Phenomenological � 32

Modelling Transmittance Statistical Models Microfacet Models for Refraction Theory for Off-Specular Reflection through Rough Surfaces, From Roughened Surfaces, Walter et al., 2007 Torrance and Sparrow, 1966 � 33

Statistical Transmittance � 34

Statistical Transmittance � 34

Statistical Transmittance � 34

Statistical Transmittance � 35

Statistical Transmittance Davis and Mineev-Weinstein , 2011 � 35

Results � 36

Phenomenological Transmittance (non-physical) � 37

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