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Realistic Illumination in 3D production
Samuli Helin
Refraction Reflection
Emitting Fluoresence
Light properties
Refraction
Reflection
Emitting
Fluoresence
Phong, Bui Tuong Phong Utah 1973 Blinn, phong-modification Oren-Nayar, Michael Oren and Shree K.
Nayar
Lighting Models in 3D Graphics
Interpolating intensity between polygons Shiny plastic surfaces
Phong
Approximation of Phong Faster Elleptic reflection in small angles
Blinn
Simulates light reflection from rough surfaces
Oren-Nayar
Global lighting model and techniques for generating images
Ray tracing is simulated Remarkable computing power needed Can be calculated from camera or from light
source
Ray tracing
Several techniques and algorithms are being used for realistig lighting
Fairly heavy Difficult to implement in animations without
aliasing and errors if comprehensive computing model is used
Global illumination
QMC Irradiance cache Radiosity map Light map
Global illumination
QMC (Quasi Monte Carlo) (definition)
Irradiance cache
Radiosity map (Definition)
Light map (definition)
Really many controls! Start small Examine the effects ->Think what is necessary Animations need very much more quality
because of flashing
Rendering
https://www.youtube.com/watch?v=PccWJ-zxlQw
Thanks!