University of North Texas Digital Library (University of North Texas) · 2009 · 15 citations · 3 references
Open access
ArchitectureBuilding ScienceVisualizationBuilding Performance SimulationOpticsScientific VisualizationLighting ModelsLighting SimulationRay TracingReflectance ModelingWindow DesignDigital MockupLighting Simulation VisualizationOptical PropertiesRadiance ModelingRadiance-based SimulationRadiance-based VisualizationRay-tracing VisualizationSurface Optical Properties
Nowadays, virtual models are commonly used to evaluate the performance of conventional window systems. Complex fenestration systems can be difficult to simulate accurately not only because of their geometry but also because of their optical properties that scatter light in an unpredictable manner. Bi-directional Scattering Distribution Functions (BSDF) have recently been developed based on a mixture of measurements and modelling to characterize the optics of such systems. This paper describes the workflow needed to create then use these BSDF datasets in the Radiance lighting simulation software. Limited comparisons are made between visualizations produced using the standard ray-tracing method, the BSDF method, and that taken in a full-scale outdoor mockup.
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