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  3. Light fields for glare assessment Light fields for glare assessment

Light fields for glare assessment

Über die Beschreibung des Lichttransports im Raum als Lichtfeld wird Blendung in Abhängigkeit von Standpunkt, Blickrichtung und Tageslichtverhältnissen untersucht.

Brief information

School:

Engineering and Architecture

Status:

Completed

Period:

15.07.2018 - 31.12.2022

Overview

Methoden zur Bewertung von Blendung durch Tageslicht in Gebäuden sind unverzichtbar in der Planung leistungsfähiger Gebäude, die Energieeffizienz mit hoher Aufenthaltsqualität verbinden sollen. In der Gebäudesimulation nehmen sie eine Sonderrolle ein, da sie sich nicht auf räumlich und nutzungsabhängig definierte Zonen beziehen, sondern Wirkungen auf eine imaginäre Person mit bekannter Position und Blickrichtung auf der Grundlage von rechnerisch erzeugten oder photographisch aufgenommenen Bildern untersuchen. Die Blendungsbewertung anhand simulierter Lichtfelder verspricht ein umfassenderes Verständnis von Blendung als Funktion der räumlichen Variablen Position, Blickrichtung sowie der zeitlich variablen, äusseren Tageslichtbedingungen.

Reduction of typical daylight assessments to spatial illuminance (blue plane), or exemplary evaluation of luminance (red plane) for few time-steps, locations and view directions (red dots)., © Lucerne University of Applied Sciences and Arts
Typical luminance distribution (fishey-projected) as basis for glare evaluation., © Lucerne University of Applied Sciences and Arts (presented at SimAUD 2021)
Glare models typically the image information solid angle and intensity of glare sources and the background., © Lucerne University of Applied Sciences and Arts (presented at SimAUD 2021)
Sampling with adaptive resolution equally captures the required information for glare analysis., © Lucerne University of Applied Sciences and Arts (presented at SimAUD 2021)
Uncompressed fisheye projection as a typical input for glare analysis., © Lucerne University of Applied Sciences and Arts (presented at SimAUD 2021)
Shirley-Chiu remapping of a fisheye projection to a square., © Lucerne University of Applied Sciences and Arts (presented at SimAUD 2021)
Result of iterative wavelet compression on the remapped image., © Lucerne University of Applied Sciences and Arts (presented at SimAUD 2021)
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Facts

Type of project

Forschung

Internal organisations involved
  • OLD - CC Building Envelope
  • CC Building Envelopes and Civil Engineering
Funding
  • SNF-HSLU als Hauptgesuchsteller/in
  • SBFI
  • Private / Stiftungen
  • Forschungsfinanzierung allgemein
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Links

  • Swiss National Science Foundation P3 project database record

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Persons involved: internal

Project manager
  • Lars Oliver Grobe
Project Co-Head
  • Stephen Wittkopf
Member of project team
  • Daniel Plörer
  • Roland Schregle
  • Stephen Wasilewski

Publications

  • Article, review; peer reviewed (5)

    • Plörer, Daniel; Wasilewski, Stephen & Grobe, Lars Oliver (2023). Glare analysis of an integral daylighting and lighting control strategy for offices. Journal of Physics: Conference Series, 2600, 112006. doi: 10.1088/1742-6596/2600/11/112006

    • Ward, Gregory J; Bueno, Bruno; Geisler-Moroder, David; Grobe, Lars Oliver; Jonsson, Jacob C; Lee, Eleanor S; Wang, Taoning & Wilson, Helen Rose (2022). Daylight simulation workflows incorporating measured Bidirectional Scattering Distribution Functions. Energy and Buildings, 259, 111890. doi: 10.1016/j.enbuild.2022.111890

    • Wasilewski, Stephen; Grobe, Lars Oliver; Wienold, Jan & Andersen, Marilyne (2022). Efficient simulation for visual comfort evaluations. Energy and Buildings, 112141. doi: 10.1016/j.enbuild.2022.112141

    • Grobe, Lars Oliver (2019). Photon mapping to accelerate daylight simulation with high-resolution, data-driven fenestration models. Journal of Physics: Conference Series, 1343(1), 012154. doi: 10.1088/1742-6596/1343/1/012154

    • Wasilewski, Stephen; Grobe, Lars Oliver; Wienold, Jan & Andersen, Marilyne (2019). A critical literature review of spatio-temporal simulation methods for daylight glare assessment. SDAR Journal of Sustainable Design in Engineering of the Built Environment, 7(1), 4. doi: 10.21427/87r7-kn41

  • Chapter/legal commentary/lexicon article (1)

    • Wasilewski, Stephen; Grobe, Lars Oliver; Schregle, Roland; Wienold, Jan & Andersen, Marilyne (2021). Raytraverse: Navigating the lightfield to enhance climate-based daylight modeling. Proceedings of the 12th Annual Symposium on Simulation for Architecture and Urban Design San Diego, CA, USA: The Society for Modeling and Simulation International (SCS).

  • Theses (Bachelor/Master/Dissertation/Habilitation) (1)

    • Wasilewski, Stephen (2023). Traversing time dependent light fields for daylight glare evaluation. Dissertation, Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland.

  • Presentation (conference/report/lectures) (13)

    • Plörer, Daniel (13.09.2023). Glare analysis of an integral daylighting and lighting control strategy for offices. CISBAT 2023: International scientific conference on the Built Environment in Transition, Lausanne, Switzerland.

    • Plörer, Daniel & Hauer, Martin (28.08.2023). Daylight Glare Probability and façade openness analysis of moveable blind systems using Raytraverse. 21st International Radiance Workshop, Innsbruck, Austria.

    • Grobe, Lars Oliver; Schregle, Roland & Wasilewski, Stephen (03.08.2022). Canned sunshine: Precomputed daylight coefficients for climate based modelling using photon mapping. 20th International Radiance Workshop, Toronto, Canada.

    • Wasilewski, Stephen (03.08.2022). Targeted spatio-temporal sampling using raytraverse. 20th International Radiance Workshop, Toronto, Canada.

    • Wasilewski, Stephen (03.08.2022). Comparing annual glare simulation methods. 20th International Radiance Workshop, Toronto, Canada.

    • Grobe, Lars Oliver & Wasilewski, Stephen (26.11.2021). Modelling daylight in buildings. Facade 2021: Digital!, Lucerne, Switzerland.

    • Wasilewski, Stephen (19.08.2021). Spatial evaluation of potential saturation and contrast effects of discomfort glare in an open-plan office. 19th International Radiance Workshop, Bilbao, Spain.

    • Wasilewski, Stephen (19.08.2021). How sampling impacts the speed, accuracy, and interpretability of rendering with Radiance. 19th International Radiance Workshop, Bilbao, Spain.

    • Wasilewski, Stephen; Schregle, Roland; Grobe, Lars Oliver; Wienold, Jan & Andersen, Marilyne (15.04.2021). Raytraverse: Navigating the lightfield to enhance climate-based daylight modeling. SimAUD 2021, online.

    • Wasilewski, Stephen (08.10.2019). Traversing time dependent light fields for daylight glare evaluation: Introduction. 5th Velux Academic Forum, Paris, FR.

    • Wasilewski, Stephen (08.10.2019). Traversing time dependent light fields for daylight glare evaluation: Method. 5th Velux Academic Forum, Paris, FR.

    • Grobe, Lars Oliver (04.09.2019). Photon mapping to accelerate daylight simulation with high-resolution, data-driven fenestration models. CISBAT 2019, Lausanne, Switzerland.

    • Wasilewski, Stephen (21.08.2019). A variable resolution approach for zonal glare assessment. 18th International Radiance Workshop, New York, USA.

Achievements

  • Awards and honours (1)

    • Wasilewski, Stephen; Schregle, Roland; Grobe, Lars Oliver; Wienold, Jan & Andersen, Marilyne (17.04.2021). SimAUD 2021 Best Paper Award für Conference paper "Raytraverse: Navigating the lightfield to enhance climate-based daylight modeling".

Brief information

School:

Engineering and Architecture

Status:

Completed

Period:

07/15/2018 - 12/31/2022

Project Head

Dr. Lars Oliver Grobe

Lecturer

+41 41 349 36 32

Show email

Project Co-Head

Prof. Dr. Stephen Wittkopf

Head of KIT (Knowledge and Innovation Transfer)

+41 41 349 36 25

Show email

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