Practical application of HDRI for discomfort glare assessment at indoor workplaces

Abstract Unified Glare Rating (UGR) is a measure of discomfort glare at indoor workplaces. Image luminance measuring device (ILMD), as an array photometer, makes it possible to measure the luminance distribution in the form of luminance map. It is the base for UGR calculation by an appropriate computer program. The range of measured luminance depends mainly on a glare source luminance, which often significantly exceeds the abilities of an array photometer sensor. High dynamic range (HDR) method, which is used in photography, can solve this problem partially. A practical approach to this problem was presented in the paper. A new procedure for preparing the set of photos for building HDR images was introduced. This effective method was developed to be used in UGR calculations. The use of the proposed procedure makes it possible to perform UGR measurements reliably, quickly, and efficiently, even by nonexperts in the field of lighting engineering.

[1]  A Wolska,et al.  Discomfort glare prediction by different methods , 2015 .

[2]  Ra Rizki Mangkuto,et al.  Assessment of pitch floodlighting and glare condition in the Main Stadium of Gelora Bung Karno, Indonesia , 2018 .

[3]  R. G. Hopkinson,et al.  Glare from daylighting in buildings. , 1972, Applied ergonomics.

[4]  Athanasios Tzempelikos,et al.  Comfort metrics for an integrated evaluation of buildings performance , 2016 .

[5]  Shree K. Nayar,et al.  Modeling the space of camera response functions , 2004, IEEE Transactions on Pattern Analysis and Machine Intelligence.

[6]  Hongyi Cai,et al.  Evaluating discomfort glare from non-uniform electric light sources , 2013 .

[7]  A. Wolska.  Glare as a specific factor in the working environment , 2013 .

[8]  Michael Wimmer,et al.  Evaluation of HDR tone mapping methods using essential perceptual attributes , 2008, Comput. Graph..

[9]  Sidney Ray,et al.  Applied photographic optics , 1998 .

[10]  Laura Bellia,et al.  Lit environments quality: A software for the analysis of luminance maps obtained with the HDR imaging technique , 2013 .

[11]  Urszula Joanna Blaszczak,et al.  Method for Evaluating Discomfort Glare Based on the Analysis of a Digital Image of an Illuminated Interior , 2013 .

[12]  Agnieszka Wolska,et al.  Algorithm of HDR image preparation for discomfort glare assessment , 2013 .

[13]  Greg Ward,et al.  High dynamic range imaging , 2001, SIGGRAPH '04.

[14]  Hongyi Cai,et al.  Improving the quality of high dynamic range images , 2011 .