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!