Visual Characteristics of Afterimage under Dark Surround Conditions

Hung-Chung Li and Pei-Li Sun
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Hung-Chung Li: Department of Cosmetic Science, Chang Gung University of Science and Technology, Taoyuan 33303, Taiwan
Pei-Li Sun: Graduate Institute of Color and Illumination Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan

Energies, 2021, vol. 14, issue 5, 1-15

Abstract: Three psycho-visual experiments were carried out to investigate visual afterimage characteristics of high luminance LEDs under dark surround conditions. The results show that the luminance of illumination, exposure time and background luminance are the primary factors influencing the afterimage’s duration, the color difference between stimulus and background, and visibility. Besides, visual afterimage characteristics are strongly correlated with the luminance contrast between the stimulus and the background, but not for the color difference with a white background. A third-order polynomial regression model was proposed to accurately estimate the afterimage duration, the color difference between stimulus and background, and visibility. The model performance showed high R-squared, low root-mean-square error (RMSE) and mean absolute error (MAE) values between the predicted and visual characteristics.

Keywords: afterimage; viewing glare; illumination engineering; mesopic vision; regression analysis (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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