lightTransportEquation

# lightTransportEquation - Light Transport Equation and...

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Unformatted text preview: Light Transport Equation and Global Illumination Light Transport Equation Equations that describe steady-state of distribution of light in any scene Light Transport Equation Given: light sources geometry of surfaces reflectance characteristics of surfaces What is the value of radiance at all points and along all directions ? The BRDF ( 29 ( 29 ( 29 n , , , , o o i p dE p dL p f i ϖ ϖ ϖ = i ϖ o ϖ Outgoing Radiance ( 29 ( 29 ( 29 n , , , , o i o p dE p f p dL i ϖ ϖ ϖ = ( 29 ( 29 i dE f dL o i o , ϖ ϖ ϖ = i ϖ o ϖ o ϖ Outgoing Radiance ( 29 ∫ Ω = i i dE f o i , ϖ ϖ i ϖ ( 29 ( 29 ∫ = o o ϖ ϖ dL L ( 29 ( 29 ∫ Ω = i o o ϖ ϖ dL L Irradiance and Radiance relation i i i dA d d L θ ϖ cos Φ = Irradiance ( E ) – Incoming flux density Radiance ( L ) – Incoming flux per unit solid angle per unit projected area dA d dE i i Φ = i i i d dE θ ϖ cos = o ϖ Outgoing Radiance i ϖ ( 29 ( 29 ( 29 ∫ Ω = i d L f L i i i o i o cos , ϖ θ ϖ ϖ ϖ ϖ o ϖ Outgoing Radiance i ϖ ( 29 ( 29 ( 29 ( 29 ∫ Ω + = i d L f L L e i i i o i o o cos , ϖ θ ϖ ϖ ϖ ϖ ϖ Light Transport Equation...
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## This note was uploaded on 08/22/2010 for the course CAP 6701 taught by Professor Staff during the Spring '10 term at University of Central Florida.

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lightTransportEquation - Light Transport Equation and...

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