Radiosity
<graphics> A method for rendering a view of a three-dimensional scene that provides realistic lighting effects, such as interobject reflections and color bleeding. Radiosity methods are computationally intense, due to the use of linear systems of equations and the spatial complexity of large scenes.
Usenet newsgroup: news:comp.graphics.
[Is radiosity more accurate than
ray tracing?
Does it take more computing power?
How does compute time scale with scene complexity?]