Item

Abstract

Rendering of high quality animations with global
illumination effects is very costly using traditional
techniques designed for static scenes.
In this paper we present an extension of
the photon mapping algorithm
to handle dynamic environments. First, for each animation segment
the static irradiance cache is computed only once for the scene with
all dynamic objects removed. Then, for each frame, the
dynamic objects are inserted and the irradiance cache
is updated locally in the scene regions whose lighting
is strongly affected by the objects. In the remaining
scene regions the photon map is used to
correct the irradiance values in the static cache.
As a result the overall animation rendering efficiency
is significantly improved and the temporal aliasing is
reduced.