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Receptive field mechanism and pupillary light reflex for the assessment of visual discomfort

Tijdschriftbijdrage - Tijdschriftartikel

Discomfort glare is defined as glare that causes discomfort without necessarily impairing the vision of objects. Traditional glare metrics fail for non-uniform luminaires. As an alternative, visual discomfort is determined by a physiological model incorporating the centre-surround receptive field mechanism and the pupillary light reflex. The pupil area, controlled by the pupillary light reflex, regulates the retinal illuminance. A centre-surround receptive field, described by a difference of Gaussians, represents the visual signal. The centre excites the signal whereas the surround controls the inhibition. A forced choice paired comparison experiment involves 7 non-uniform rear projected stimuli with different spatial frequencies. Inspired by a promising coefficient of determination of 0.90, the model is a candidate to replace current glare metrics as UGR or VCP, especially when non-uniform luminaires are to be evaluated.
Tijdschrift: Light and Engineering
ISSN: 0236-2945
Issue: 2
Volume: 26
Pagina's: 75 - 80
Aantal pagina's: 5
Jaar van publicatie:2018
Trefwoorden:Elektronica en elektrotechniek, Klassieke natuurkunde