This paper introduces a new method for real-time
relighting of scenes illuminated by local light
sources. We extend previous work on precomputed radiance
transfer for distant lighting to local lighting by
introducing the concept of unstructured light
clouds. The unstructured light cloud enables a compact
representation of local lights in the model and
real-time rendering of complex models with full global
illumination due to local light sources. We use
simplification of lights, and clustered PCA to obtain a
compressed representation. When storing only the
indirect component of the illumination, we are able to
get high quality with only 8-16 lighting coefficients
per vertex. Our results demonstrate real-time rendering
of scenes with moving lights, dynamic cameras, glossy
materials and global illumination.
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