Photons
A photon is a unit of intensity of light at the retina equal to the
illumination received per square millimeter of a pupillary area from a
surface having a brightness of one candle per square meter.
|
C photons |
caustic |
Light is emitted from a light source, goes
through one or more specular reflections or transmissions, hits a diffuse
object, and reflects to the viewer. |
|
G photons |
global illumination |
As photons bounce around a scene and hit objects, they store color information. |