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Mesopic visual efficiency IV: a model with relevance to nighttime driving and other applicationsNational Physical Laboratory, UK, teresa.goodman{at}npl.co.uk
National Physical Laboratory, UK
Applied Vision Research Centre, Henry Wellcome Laboratories for Vision Sciences, City University, UK
Lighting Laboratory, Helsinki University of Technology, Finland
Lighting Laboratory, Helsinki University of Technology, Finland
TNO Human Factors, The Netherlands
Laboratory of Lighting Technology, Darmstadt University of Technology, Germany
Virtual Environment and Imaging Technologies Laboratory, Pannon University, Hungary
Virtual Environment and Imaging Technologies Laboratory, Pannon University, Hungary
Virtual Environment and Imaging Technologies Laboratory, Pannon University, Hungary The authors represent a research consortium1 which has adopted a task performance based approach for nighttime driving to establish a system for photometry in the mesopic region. This article analyses the experimental investigations described in earlier articles on visual performance in the mesopic domain using reaction time, detection threshold, and discrimination threshold techniques. These results are used to develop a system for mesopic photometry, which balances the quality of the fit to the experimental data with the ease of practical implementation by the lighting industry. A more complex model is also described, which takes account of the chromatic visual response channels and thus provides a better fit to some of the experimental results (particularly those involving monochromatic stimuli), but describes the totality of the data less well and is furthermore less suitable for practical photometric measurements.
Lighting Research and Technology, Vol. 39, No. 4,
365-392 (2007) This article has been cited by other articles:
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