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Naturally glossy: Gloss perception, illumination statistics, and tone mapping
Wendy J Adams1, Gizem Kucukoglu2, Michael S Landy2,3
1Department of Psychology, University of Southampton, Southampton, UK.
Journal of Vision
|December 4, 2018
Summary
Estimating material gloss is challenging due to illumination and display effects. Informative backgrounds improve gloss constancy by helping observers better perceive material properties.
Area of Science:
- Visual perception
- Material property recognition
- Computational imaging
Background:
- Material property recognition is crucial for daily interactions.
- Estimating properties like glossiness from images is an ill-posed problem.
- Image cues for gloss are influenced by shape, illumination, and tone mapping.
Purpose of the Study:
- To investigate how natural illumination structures affect gloss constancy.
- To determine the impact of manipulating illumination and tone mapping on perceived gloss.
- To assess the role of background information in maintaining gloss constancy.
Main Methods:
- Manipulating illumination fields to violate natural statistical regularities (e.g., light source direction, luminance distribution).
- Analyzing the effects of tone mapping on perceived gloss.
- Evaluating gloss constancy with objects viewed against informative versus plain backgrounds.
Main Results:
- Violating natural illumination statistics leads to errors in perceived gloss.
- Tone mapping significantly impacts perceived gloss.
- Informative backgrounds improve gloss constancy, particularly mitigating tone mapping effects.
Conclusions:
- Perceived gloss is sensitive to statistical regularities in illumination.
- Tone mapping poses a challenge for accurate gloss perception.
- Contextual information from backgrounds aids in maintaining gloss constancy, suggesting sensitivity to environmental statistics.
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