Cuttle has proposed mean room surface exitance as a metric for use within interior lighting design. Two reported barriers to its use are: a lack of available software to calculate the metric and the tedious and cumbersome nature of recording its values in the field using current equipment and methodologies. This paper presents a method for facilitating the calculation of mean room surface exitance using readily available freeware, namely Radiance, and also presents a methodology that utilises high dynamic range imaging as a pragmatic alternative for field measurement.
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References
1.
CuttleC. Lighting by Design, 2nd. Oxford: Architectural Press, 2008.
2.
CuttleC. Lighting Design: A Perception-based Approach, London: Routledge, 2015.
3.
CuttleC. Towards the third stage of the lighting profession. Lighting Research and Technology2010; 42: 73–93.
4.
Cuttle C. Perceived adequacy of illumination: A new basis for lighting practice. Proceedings of the 3rd Professional Lighting Design Convention, PLDA, Madrid, 2011.
5.
CuttleC. A new direction for general lighting practice. Lighting Research and Technology2013; 45: 22–39.
6.
CuttleC. Correspondence: The lumen dumper’s solution. Lighting Research and Technology2013; 45: 391–393.
7.
Cuttle C. Redefining the purpose of general lighting practice: Proceedings of the LS-14 Symposium, June 22–27: 2014: 121–130.
8.
Raynham P. Room lighting in the absence of a defined visual task and the impact of mean room surface exitance. Lighting Research and Technology. First published 27 November, 2014, doi:10.1177/1477153514561071.
9.
VenningBPoultonKShawKLoeDLRaynhamPHoggettN. Cuttle’s theory, the profession responds. Society of Light and Lighting Newsletter2010; 3: 7–9.
10.
MacraeI. Comment 1: A new direction for general lighting practice. Lighting Research and Technology2013; 45: 35–36.
11.
BrandstonHM. Comment 3: Towards the third stage of the lighting profession. Lighting Research and Technology2010; 42: 90–91.
12.
WildeMB. Comment 2: A new direction for general lighting practice. Lighting Research and Technology2013; 45: 36–38.
13.
BedocsL. Comment 1: Towards the third stage of the lighting profession. Lighting Research and Technology2010; 42: 87–89.
14.
MansfieldKP. Comment 2: Towards the third stage of the lighting profession. Lighting Research and Technology2010; 42: 89–90.
15.
Boyce PR. Lighting quality for all? Proceedings of the SLL International Lighting Conference, Dublin, April 2013.
16.
WardGShakespeareR. Rendering with Radiance, San Francisco: M. Kaufmann, 2004.
17.
InaniciMN. Evaluation of high dynamic range photography as a luminance data acquisition system. Lighting Research and Technology2006; 38: 123–134.
18.
MardaljevicJPainterBAndersenM. Transmission illuminance proxy HDR imaging: A new technique to quantify luminous flux. Lighting Research and Technology2009; 41: 27–49.
Ward G. The radiance lighting simulation and rendering system. Proceedings of SIGGRAPH 94: Computer Graphics Annual Conference Series. Orlando, FL: Association for Computing Machinery’s Special Interest Group on Computer Graphics, 1994: 459–472.
21.
WardGRubinsteinFClearR. A ray tracing solution for diffuse inter-reflection. Computer Graphics1988; 22: 85–92.
