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Updated: Sep 13, 2025

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Perceiving gloss through transparency.

Sabrina Hansmann-Roth1, Pascal Mamassian2

  • 1Icelandic Vision Lab, Department of Psychology, University of Iceland, Reykjavík, Iceland.

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Summary
This summary is machine-generated.

Transparent layers alter perceived gloss by shifting color and reducing luminance contrast. Observers tend to overestimate gloss when viewing objects through such materials, especially with lighter layers.

Keywords:
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Area of Science:

  • Visual perception
  • Material science
  • Image processing

Background:

  • Image intensity is influenced by illumination, object reflectance, and intervening media properties.
  • Partially transmissive materials can alter visual perception of objects behind them, affecting color and contrast.

Purpose of the Study:

  • To investigate how achromatic color shifts and luminance contrast compression from transparent layers impact perceived gloss.
  • To quantify the effect of different transparent layers on gloss perception using conjoint measurement.

Main Methods:

  • Utilized a maximum likelihood conjoint measurement paradigm to assess perceived gloss.
  • Conducted experiments presenting glossy objects behind partially transmissive materials.
  • Employed a matching task where observers matched surfaces seen directly to those viewed through a transparent layer.

Main Results:

  • Transparent layers cause achromatic color shifts and luminance contrast compression, affecting specular reflections.
  • Perceived gloss shows a high degree of constancy despite the transparent layer.
  • A small but significant contribution of the transparent layer was observed in gloss estimation, particularly with light-colored layers.

Conclusions:

  • Gloss is generally overestimated when viewed through transparent layers.
  • The properties of transparent layers, especially color, influence gloss perception.
  • Visual perception of gloss is robust but susceptible to distortions introduced by intervening media.