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Daylight variation and contrast effect on human perception of spatial quality: A case study of selected contemporary residential spaces in Sri Lanka

Authors:

L. Pathirage ,

University of Moratuwa, LK
About L.
Department of Architecture
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N. Perera

University of Moratuwa, LK
About N.
Department of Architecture
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Abstract

Visual perception of space is influenced by the composition and behaviour of light. Daylight as a natural element creates different atmospheres in the same space through its variation of intensity, colour, and direction. It creates dynamic shadow patterns, fluctuating brightness, and contrast levels. Although the capacity to create variation - therefore contrast, is an important characteristic of daylight - it is often neglected in research, where comfort and visual performance take prominence. This is a research initiative to explore the effect of daylight variation on spatial quality and human perception. The research adopts a two-step process, where, digital images are first mapped to generate contrast diagrams, and secondly, the generated digital images form the basis for a survey utilising a seven-point semantic differential scale, to explore the relationship between daylight variability and human perception. The temporal variation of daylight is explored by diagramming spaces at selected times of the day and year. The scope of the study is limited to selected residential spaces as case studies and focuses on the manner of integrating daylight into spaces. Results show that the level of contrast correlates to the perception of ‘low contrast – high contrast’, ‘unvaried – varied’, ‘calming – exciting’, for the observer.
How to Cite: Pathirage, L. and Perera, N., 2022. Daylight variation and contrast effect on human perception of spatial quality: A case study of selected contemporary residential spaces in Sri Lanka. FARU Journal, 9(1), pp.1–11. DOI: http://doi.org/10.4038/faruj.v9i1.112
Published on 29 Jul 2022.
Peer Reviewed

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