Published January 1, 2019 | Version v1
Other Open

Photon mapping to accelerate daylight simulation with high-resolution, data-driven fenestration models

  • 1. Hochschule Luzern


Data-driven modelling provides a general means to represent optically complex fenestration in daylight simulation by its Bidirectional Scattering Distribution Function (BSDF). Radiance employs the tensor tree as an efficient data structure to store the BSDF at high directional resolution. The application of such models under sunny sky conditions is, however, elaborate, since the density of stochastic backward samples must match the BSDF resolution. The bidirectional Photon Map is proposed to rapidly forward-sample the BSDF, starting from the known sun direction. Its exemplary application shows a potential speed-up of ≥ 98 % when compared to backward ray-tracing.


+ ID der Publikation: hslu_72106 + Art des Beitrages: Wissenschaftliche Medien + Jahrgang: 1343 + Sprache: Englisch + Bemerkungen: CISBAT 2019: Climate Resilient Cities - Energy Efficientcy & Renewables in the Digital Era + Letzte Aktualisierung: 2019-12-02 15:20:36



Additional details

Related works

Is identical to
10.1088/1742-6596/1343/1/012154 (DOI)
Is published in
1742-6588 (ISSN)