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An anchoring theory of lightness perception
A Gilchrist1, C Kossyfidis, F Bonato
1Psychology Department, Rutgers, State University of New Jersey, Newark College of Arts and Sciences 07102, USA.
Psychological Review
|November 24, 1999
Summary
New models of lightness perception address limitations in intrinsic image theories by incorporating anchoring rules. This approach explains errors and unifies constancy failures, offering a comprehensive understanding of visual lightness.
Area of Science:
- Visual perception
- Cognitive psychology
- Computational neuroscience
Background:
- Intrinsic image models are currently the most accepted theories for lightness perception.
- These models inadequately explain anchoring rules and surface lightness errors.
Purpose of the Study:
- To review existing theories of lightness perception.
- To propose a new model that addresses the limitations of intrinsic image models.
Main Methods:
- Review of historical and current theories of lightness perception.
- Development of a novel model integrating local and global anchoring mechanisms.
Main Results:
- The new model successfully accounts for a wide range of empirical data, including classical and recent findings.
- It resolves long-standing issues related to illumination-dependent and background-dependent constancy failures.
- The model provides a superior explanation for the specific patterns of errors observed in surface lightness judgments.
Conclusions:
- A novel model combining local and global anchoring offers a more comprehensive explanation of lightness perception.
- This new framework resolves key limitations of intrinsic image models, particularly regarding error patterns and constancy failures.