标题: Interactive Lighting Design with Hierarchical Light Representation
作者: Lin, Wen-Chieh
Huang, Tsung-Shian
Ho, Tan-Chi
Chen, Yueh-Tse
Chuang, Jung-Hong
资讯工程学系
Department of Computer Science
公开日期: 1-六月-2013
摘要: 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.
URI: http://dx.doi.org/10.1111/cgf.12159
http://hdl.handle.net/11536/22312
ISSN: 0167-7055
DOI: 10.1111/cgf.12159
期刊: COMPUTER GRAPHICS FORUM
Volume: 32
Issue: 4
起始页: 133
结束页: 142
显示于类别:Articles


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