Accurate Light Source Acquisition and Rendering
Michael Goesele,
Xavier Granier, Wolfgang Heidrich.
Realistic image synthesis requires both complex and realistic models
of real-world light sources and efficient rendering algorithms to
deal with them. We introduce a processing pipeline for dealing with
complex light sources from acquisition to global illumination
rendering. We carefully design optical filters to guarantee high
precision measurements of real-world light sources and propose two
practically feasible setups that allow us to measure light sources
with different characteristics. We also introduce an efficient
importance-driven photon emission algorithm for our representation
that can be used, for example, in conjunction with Photon Maps. The
image shows a rendering of a captured bike light illuminating a
scene.
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