Photometric, geometric, and perceptual factors in illumination-independent lightness constancy

Perception & Psychophysics
Alessandro Soranzo, T Agostini

Abstract

It has been shown that lightness constancy depends on the articulation of the visual field (Agostini & Galmonte, 1999). However, among researchers there is little agreement about the meaning of "articulation." Beyond the terminological heterogeneity, an important issue remains: What factors are relevant for the stability of surface color perception? Using stimuli with two fields of illumination, we explore this issue in three experiments. In Experiment 1, we manipulated the number of luminances, the number of reflectances, and the number of surfaces and their spatial relationships; in Experiment 2, we manipulated the luminance range; finally, in Experiment 3 we varied the number of surfaces crossed by the illumination edge. We found that there are two relevant factors in optimizing lightness constancy: (1) the lowest luminance in shadow and (2) the co-presence of patches of equal reflectance in both fields of illumination. The latter effect is larger if these patches strongly belong to each other. We interpret these findings within the albedo hypothesis.

References

Dec 1, 1987·Journal of the Optical Society of America. A, Optics and Image Science·L E Arend, R Goldstein
Jan 1, 1971·Journal of the Optical Society of America·E H Land, J J McCann
Feb 1, 1995·Perception & Psychophysics·J A Schirillo, L E Arend
Oct 1, 1993·Perception & Psychophysics·L E Arend, B Spehar
Jan 1, 1997·Perception·J A Schirillo, S K Shevell
Sep 28, 1999·Perception & Psychophysics·X Li, A L Gilchrist
Nov 24, 1999·Psychological Review·A GilchristE Economou
Nov 26, 1999·Perception & Psychophysics·T Agostini, A Galmonte
Apr 2, 2002·Perception·Alexander D Logvinenko
Jun 1, 1948·Journal of Experimental Psychology·H WALLACH

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Citations

May 15, 2013·Vision Research·Alessandro SoranzoChristopher J Wilson
Aug 4, 2010·Perception·Alessandro SoranzoTiziano Agostini
Nov 13, 2012·I-Perception·Masataka Sawayama, Eiji Kimura
Sep 29, 2020·Frontiers in Psychology·Alessandro SoranzoJohn Reidy
May 3, 2019·Attention, Perception & Psychophysics·Alessandro Soranzo, Alan Gilchrist
Nov 13, 2015·Perception·Elias EconomouAlan Gilchrist

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