The glare effect is a brightness illusion that has captured the attention of the vision community since its discovery. However, its photometrical reversal, which we refer to here as photometrical reversed glare (PRG) stimuli, remained relatively unexplored. We presented three experiments that sought to examine the perceived brightness of a target area surrounded by luminance gradients in PRG stimuli and compare them with conventional glare effect configurations. Experiment 1 measured the brightness of the central target area of PRG stimuli through an adjustment task; the results showed that the target appeared brighter than similar, comparative areas not surrounded by luminance gradients. This finding was unexpected given the recent report that PRG stimuli cause pupil dilation. Meanwhile, Experiments 2 and 3 implemented a rating task to further test the findings in Experiment 1. Again, the study found a robust brightening illusion in the target area of PRG stimuli in a wide range of target and background luminance. The results are discussed in comparison with the brightness enhancement of the glare effect.

Kobayashi, Y., Zavagno, D., Morikawa, K. (2021). Asymmetric Brightness Effects With Dark Versus Light Glare-Like Stimuli. I-PERCEPTION, 12(1), 1-18 [10.1177/2041669521993144].

Asymmetric Brightness Effects With Dark Versus Light Glare-Like Stimuli

Zavagno, D;
2021

Abstract

The glare effect is a brightness illusion that has captured the attention of the vision community since its discovery. However, its photometrical reversal, which we refer to here as photometrical reversed glare (PRG) stimuli, remained relatively unexplored. We presented three experiments that sought to examine the perceived brightness of a target area surrounded by luminance gradients in PRG stimuli and compare them with conventional glare effect configurations. Experiment 1 measured the brightness of the central target area of PRG stimuli through an adjustment task; the results showed that the target appeared brighter than similar, comparative areas not surrounded by luminance gradients. This finding was unexpected given the recent report that PRG stimuli cause pupil dilation. Meanwhile, Experiments 2 and 3 implemented a rating task to further test the findings in Experiment 1. Again, the study found a robust brightening illusion in the target area of PRG stimuli in a wide range of target and background luminance. The results are discussed in comparison with the brightness enhancement of the glare effect.
Articolo in rivista - Articolo scientifico
glare effect; lightness/brightness; luminance gradient; photometrical reversed glare; simultaneous lightness contrast;
English
2021
12
1
1
18
open
Kobayashi, Y., Zavagno, D., Morikawa, K. (2021). Asymmetric Brightness Effects With Dark Versus Light Glare-Like Stimuli. I-PERCEPTION, 12(1), 1-18 [10.1177/2041669521993144].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/394982
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