Interactive Lighting Design with Hierarchical Light Representation

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dc.contributor.authorLin, Wen-Chiehen_US
dc.contributor.authorHuang, Tsung-Shianen_US
dc.contributor.authorHo, Tan-Chien_US
dc.contributor.authorChen, Yueh-Tseen_US
dc.contributor.authorChuang, Jung-Hongen_US
dc.contributor.editorNicolas Holzschuch and Szymon Rusinkiewiczen_US
dc.date.accessioned2015-02-28T15:37:37Z
dc.date.available2015-02-28T15:37:37Z
dc.date.issued2013en_US
dc.description.abstractLighting 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.en_US
dc.description.seriesinformationComputer Graphics Forumen_US
dc.identifier.issn1467-8659en_US
dc.identifier.urihttps://doi.org/10.1111/cgf.12159en_US
dc.publisherThe Eurographics Association and Blackwell Publishing Ltd.en_US
dc.titleInteractive Lighting Design with Hierarchical Light Representationen_US
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EGSR13: 24th Eurographics Symposium on Rendering