Wavelet Radiance Transport for Interactive Indirect Lighting
Rendering Techniques 2006 (Eurographics Symposium on Rendering) - jun 2006
Global illumination is a complex all-frequency phenomenon including
subtle effects caused by indirect lighting. Computing global
illumination interactively for dynamic lighting conditions has many
potential applications, notably in architecture, motion pictures and
computer games. It remains a challenging issue, despite the
considerable amount of research work devoted to finding efficient
methods. This paper presents a novel method for fast computation of
indirect lighting; combined with a separate calculation of direct
lighting, we provide interactive global illumination for scenes with
diffuse and glossy materials, and arbitrarily distributed point light
sources. To achieve this goal, we introduce three new tools: a 4D
wavelet basis for concise radiance expression, an efficient
hierarchical pre-computation of the Global Transport Operator
representing the entire propagation of radiance in the scene in a
single operation, and a run-time projection of direct lighting on
to our wavelet basis. The resulting technique allows unprecedented
freedom in the interactive manipulation of lighting for static scenes.
Images and movies
BibTex references
@InProceedings\{KTHS06, author = "Kontkanen, Janne and Turquin, Emmanuel and Holzschuch, Nicolas and Sillion, Fran\c{c}ois", title = "Wavelet Radiance Transport for Interactive Indirect Lighting", booktitle = "Rendering Techniques 2006 (Eurographics Symposium on Rendering)", month = "jun", year = "2006", editor = "Heidrich, Wolfgang and Akenine-M{\"o}ller, Thomas", organization = "Eurographics", keywords = "finite element techniques, real-time rendering", url = "http://artis.inrialpes.fr/Publications/2006/KTHS06" }