global illumination
DESCRIPTION
Global Illumination. Collected Images D. House 11/24/09. Radiosity. The Cornell Box. Where: B i is the radiosity of patch I , E i is emitted energy, R i is the reflectivity of the patch. - PowerPoint PPT PresentationTRANSCRIPT
Global Illumination
Collected ImagesD. House11/24/09
Radiosity
The Cornell Box
• Where: Bi is the radiosity of patch I, Ei is emitted energy, Ri is the reflectivity of the patch.
• All j (j != i) in the rendered environment are integrated for BjFji dAj, to determine the energy leaving each patch j that arrives at patch i.
• Fij is the constant-valued view factor for the radiation leaving i and hitting patch j.
• The reciprocity:• For ease of use the integral is replaced and uniform
radiosity is assumed over the patch:
Radiosity for Architectural Rendering
Photon Mapping
Cornell Box with refractions and reflections
Caustics
Subsurface Scattering