Schregle Roland HSLU T&A

Dr. Roland Schregle Roland Schregle

Senior Research Associate

Schregle Roland HSLU T&A

Lucerne School of Engineering and Architecture

Room B21
Technikumstrasse 21
6048 Horw


Institute of Civil Engineering IBI

CC Building Envelopes and Civil Engineering

Senior Research Associate

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Professional competencies
  • Computational daylight simulation
  • High dynamic range imaging
  • Physically based rendering - Radiosity, Monte Carlo raytracing, photon mapping
  • Material modelling - BSDF/BTF acquisition and representation

Projects

Research projects

  • ΦΩΣ 4D – Affordance-based evaluation of daylight in antique residential building
  • Light fields for glare assessment
  • Three-Dimensional Light Flow in Architectural Spaces and its Visual Interpretation
  • A New Expression of Three‐dimensional Light Flow in Architectural Spaces and its Visual Interpretation in the Context of Human‐centric Lighting Design
  • Solar facades with daylight re-direction and coloured photovoltaics
  • Life Cylce Inventories of BIPV
  • ACTIVE INTERFACES - Holistic strategy to simplify standards, assessments and certifications for building integrated photovoltaics
  • High Resolution Complex Glazing Library
  • Vorprojekt Architekturintegriertes PV Dach
  • Farbige PV Module
  • Verein Innovationspark Zentralschweiz
  • Daylighting Systems (SCCER - FEEB&D)
  • Modeling and simulation of daylight control systems

Publications and presentations

Publications and presentations - Artistic work/music

  • Schregle, Roland (Autor/in) (2018). PV Reflection Video https://youtu.be/jmbqe8VyK0g.

Publications and presentations - Article, review; peer reviewed

  • Schregle, Roland; Renken, Christian & Wittkopf, Stephen (03.08.2018). Spatio-Temporal Visualisation of Reflections from Building Integrated Photovoltaics. Buildings, 8(8), 101. doi: 10.3390/buildings8080101
  • Schregle, Roland & Wittkopf, Stephen (12.02.2018). An Image-Based Gamut Analysis of Translucent Digital Ceramic Prints for Coloured Photovoltaic Modules. Buildings, 8(2), 30. doi: 10.3390/buildings8020030
  • Schregle, Roland; Krehel, Marek & Wittkopf, Stephen (18.08.2017). Computational Colour Matching of Laminated Photovoltaic Modules for Building Envelopes. Buildings, 7(3), 72. doi: 10.3390/buildings7030072
  • Schregle, Roland; Grobe, Lars Oliver & Wittkopf, Stephen (2016). An Out-of-Core Photon Mapping Approach to Daylight Coefficients. Journal of Building Performance Simulation, 9(6), 620-632. doi: 10.1080/19401493.2016.1177116
  • Schregle, Roland; Grobe, Lars Oliver & Wittkopf, Stephen (2015). Progressive Photon Mapping for Daylight Redirecting Components. Solar Energy, 114(April 2015), 327-336. doi: 10.1016/j.solener.2015.01.041
  • Schregle, Roland & Wienold, Jan (2004). Physical Validation of Global Illumination Methods: Measurement and Error Analysis. Computer Graphics Forum, 2004(23(4)), 761-781. doi: 10.1111/j.1467-8659.2004.00807.x
  • Schregle, Roland (2003). Bias Compensation for Photon Maps. Computer Graphics Forum, 2003(22(4)), 729-742. doi: DOI: 10.1111/j.1467-8659.2003.00720.x

Publications and presentations - Chapter/legal commentary/lexicon article

  • Schregle, Roland; Bauer, Carsten; Grobe, Lars Oliver & Wittkopf, Stephen (2015). EvalDRC: A Tool for Annual Characterisation of Daylight Redirecting Components with Photon Mapping. In Jean-Louis Scartezzini (Hrsg.), Proceedings of International Conference CISBAT 2015: Future Buildings and Districts Sustainability from Nano to Urban Scale: Vol. 1 (S. 217-222). Lausanne: Ecole Polytechnique Fédérale de Lausanne (EPFL).

Publications and presentations - Report/working paper

  • Schregle, Roland (2016). The RADIANCE Out-of-Core Photon Map: Technical Report (Bericht).
  • Schregle, Roland (2015). Development and Integration of the RADIANCE Photon Map Extension (Bericht).
  • Schregle, Roland (2014). Progressive Photon Mapping for Daylight Redirecting Components (Bericht). CC EASE, Hochschule Luzern,
  • Schregle, Roland (2014). Genprismella: A RADIANCE Generator for Retroreflecting Prismatic Blinds (Bericht). CC EASE, Hochschule Luzern,

Publications and presentations - Theses (Bachelor/Master/Dissertation/Habilitation)

  • Schregle, Roland (2004). Daylight simulation with photon maps. Dissertation, Fraunhofer ISE, Freiburg im Breisgau, Deutschland.

Publications and presentations - Other publication formats

  • Schregle, Roland & Wittkopf, Stephen (02.02.2018). An Image-Based Gamut Analysis of Translucent Digital Ceramic Prints for Coloured Photovoltaic Modules: Supplementary Data.

Publications and presentations - Presentation (conference/report/lectures)

  • 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.
  • Schregle, Roland & Wittkopf, Stephen (03.09.2020). Kronos: A Visual Analytics Controlling Tool. CARF Luzern 2020, Luzern (Zoom).
  • Schregle, Roland; Yoshizawa, Nozomu; Okamoto, Toshihide & Komazawa, Ken (21.08.2019). An Ongoing Visual Assessment of Three-dimensional Light Flow Expressed Through Volume Photon Mapping. 18th International RADIANCE Workshop, New York City, New York, USA.
  • Okamoto, Toshihide; Schregle, Roland & Yoshizawa, Nozomu (14.06.2019). Case Studies of a Three-Dimensional Expression of Coloured Light Flow Using Volume Photon Mapping. 29th Quadrennial Session of the CIE, Washington DC.
  • Renken, Christian; Schregle, Roland & Wittkopf, Stephen (03.09.2018). Spatio-Temporal Visualisation of Refections from Building Integrated Photovoltaics. 2018 International Radiance Workshop, Loughborough University, UK.
  • Schregle, Roland & Bauer, Carsten (29.08.2016). Out-of-core photon mapping: When more isn't enough. 15th International Radiance Workshop, Padua.
  • Schregle, Roland (29.05.2015). Enhanced Photon Mapping in RADIANCE: Features. Workshop Enhanced Photon Mapping in RADIANCE, Lucerne University of Applied Science and Arts.
  • Schregle, Roland & Wittkopf, Stephen (01.09.2014). Recent Developments in Photon Mapping. 13th International RADIANCE Workshop, London.
  • Schregle, Roland; Denk, Cornelia & Glencross, Mashhuda (19.06.2013). Grand Challenges: Material Models in Automotive. Workshop on Material Appearance Modelling, Zaragoza.
  • Schregle, Roland (24.08.2011). BSDF Compression using Wavelets. 10th International RADIANCE Workshop, Berkeley.
  • Schregle, Roland (20.09.2010). Introduction to Photon Mapping. 9th International RADIANCE Workshop, Freiburg.
  • Schregle, Roland (30.09.2002). The RADIANCE Photon Map. 1st International RADIANCE Workshop, Fribourg.

Achievements

    • 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".

Achievements - Awards and honours

  • 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".