Local Illumination Model

Question

Describe in brief the term Local Illumination Model?

Answer 1

Local Illumination Model:

Where only light which is directly reflected from the light source through a surface to our eyes is considered. No account is taken of any light which is incident on the surface after the multiple reflections among other surfaces. This is a kind of illumination model which is used in nearly all scan line rendering pipelines. That is the contribution from light which goes directly from the light source and is reflected from the surface termed as a local illumination model. Therefore for a local illumination model, the shading of any surface is not dependent of the shading of all other surfaces. The scan line rendering system employs the local illumination model.