Interactive Lighting Design with
Hierarchical Light Representation
Final result with indirect lighting Assigning shadow
Drawing
highlighted regions
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Overview
Lighting design plays
a crucial role in indoor lighting design, computer cinematograph and many other
applications .
Computer-assisted
lighting design aims to find a lighting configuration that best approximates the
illumination effect
specified by designers. In this paper, we present an automatic approach for
lighting design, in which discrete and
continuous optimization of
the lighting configuration, including the number, intensity , and position of
lights, are
achieved. Our lighting design algorithm consists of
two major steps. The
first step estimates an
initial lighting
configuration by light sampling and
clustering. The initial light clusters are then recursively merged to
form a light
hierarchy. The second step optimizes the
lighting configuration by
alternatively selecting a
light cut on the light
hierarchy to determine the number of representative
lights and optimizing the lighting parameters using the simplex
method. To speed up
the optimization computation, only illumination at
scene vertices that are
important to
rendering are sampled and
taken into account in
the optimization. Using the
proposed approach, we
develop a
lighting design system that can
compute appropriate lighting configurations to
generate the illumination
effects
iteratively painted and modified by a designer interactively.
Publications
Ÿ
Wen-Chieh Lin,
Tsung-Shian Huang, Tan-Chi Ho, Yueh-Tse Chen, and Jung-Hong Chuang, “Interactive
Lighting
Design with Hierarchical Light Representation”, Eurographics
Symposium on Rendering 2013. (Computer Graph-
ics Forum, Vol. 32, No. 4, 2013, pp. 133-142).
Additional
results