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Application of High-Dynamic Range Imaging Techniques in Architecture: A Step toward High-Quality Daylit Interiors?

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Cauwerts, Coralie [UCL] Piderit, María Beatriz [UBB]

High dynamic range (HDR) imaging techniques are nowadays widely used in building research to capture luminances in the occupant field of view and investigate visual discomfort. This photographic technique also makes it possible to map sky luminances. Such images can be used for illuminating virtual scenes; the technique is called image-based lighting (IBL). This paper presents a work investigating IBL in a lighting quality research context for accelerating the development of appearance-driven performance indicators. Simulations were carried out using Radiance software. The ability of IBL to accurately predict indoor luminances is discussed by comparison with luminances from HDR photographs and luminances predicted by simulation in modeling the sky in several other more traditional ways. The present study confirms previous observations that IBL leads to similar luminance values than far less laborious simulations in which the sky is modeled based on outdoor illuminance measurements. IBL and these last methods minimize differences with HDR photographs in comparison to sky modeling not based on outdoor measurements.

Document type Article de périodique (Journal article)
Access type Accès libre
Publication date 2018
Language Anglais
Journal information "Journal of Imaging" - Vol. 4, p. 15 (2018)
Peer reviewed yes
Publisher MDPI AG
e-issn 2313-433X
Publication status Publié
Affiliation UCL - SST/LAB - Louvain research institute for Landscape, Architecture, Built environment
Keywords daylighting; high dynamic range imaging techniques; image-based lighting; radiance; simulation; renderings; prediction; psychophysics
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Bibliographic reference Cauwerts, Coralie ; Piderit, María Beatriz. Application of High-Dynamic Range Imaging Techniques in Architecture: A Step toward High-Quality Daylit Interiors?. In: Journal of Imaging, Vol. 4, p. 15 (2018)
Permanent URL http://hdl.handle.net/2078.1/192985