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Related Experiment Videos

Color appearance of surfaces viewed through fog.

J Hagedorn1, M D'Zmura

  • 1Department of Cognitive Sciences, University of California at Irvine, Irvine, CA 92697, USA.

Perception
|February 28, 2001
PubMed
Summary

The convergence model accurately describes how fog affects surface colors by considering both color shift and contrast changes. This finding applies the model to visual perception through atmospheric conditions like fog.

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The colors seen behind transparent filters.

Perception·2001

Area of Science:

  • Visual perception
  • Color science
  • Atmospheric optics

Background:

  • Previous research shows transparent filters alter surface colors via a convergence model.
  • This model accounts for color shift and contrast reduction.

Purpose of the Study:

  • To determine if the convergence model applies to visual perception through fog.
  • To investigate the chromatic properties of fog and their effect on perceived surface color.

Main Methods:

  • An experimental asymmetric matching task was conducted.
  • Computer graphic simulations were used to present fog conditions.
  • Observers adjusted surface colors viewed through fog to match those in clear conditions.

Main Results:

  • The convergence model demonstrated a good fit with the experimental data.
  • Observed color shifts and contrast changes through fog were consistent with the model's predictions.

Conclusions:

  • The convergence model effectively explains color perception through fog.
  • Color constancy in fog is best described by a model incorporating both color shift and contrast changes.

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