Photon-mapping in climate-based daylight modelling with high-resolution BSDFs
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Author
Date
2019-12-15Type
- Journal Article
ETH Bibliography
no
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Abstract
Visual comfort assessments employing luminance-based metrics rely on efficient CBDM techniques for image synthesis. Data-driven BSDF models allow to isolate internal light paths in optically CFS from CBDM. Bidirectional photon mapping is proposed for the efficient sampling of such models in the calculation of the direct solar component in CBDM. The method allows accurate image synthesis for visual comfort assessments with only two calculation steps, achieving comparable accuracy as the established but complex 5PM. The validity of the approach is confirmed by comparison with backward ray-tracing. Its exemplary application to compare two CFS in terms of glare control demonstrates the importance to achieve reconcilability of conflicting targets such as view and glare control in daylighting. Show more
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publishedExternal links
Journal / series
Energy and BuildingsVolume
Pages / Article No.
Publisher
ElsevierSubject
Radiance; Photon mapping; BSDF; Complex fenestration; Climate-Based Daylight Modelling; Five Phase MethodOrganisational unit
03902 - Schlüter, Arno / Schlüter, Arno
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ETH Bibliography
no
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