ABSTRACT
Correctly modeling scene illumination is crucial for many applications in real-world visual computing. Many applications require painstaking control and repeatable conditions-for instance, whenever illumination response is used to infer scene geometry, such as in photometric stereo or shapefrom-shading. Other applications can abstract from illumination, once it is precisely known. Some methods enable editing the effect of incident illumination on a scene, a technique known as relighting, in a way which takes into account both direct reflections, especially diffuse color and specular highlights, as well as more complex indirect effects such as interreflections, subsurface scattering or caustics.
