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Seeing Black and White$
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Alan Gilchrist

Print publication date: 2006

Print ISBN-13: 9780195187168

Published to Oxford Scholarship Online: September 2007

DOI: 10.1093/acprof:oso/9780195187168.001.0001

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Errors in Lightness

Errors in Lightness

(p.266) 10 Errors in Lightness
Seeing Black and White

Alan Gilchrist

Oxford University Press

This chapter argues that the overall pattern of errors in human lightness perception offers a powerful method for identifying the kind of software used by the lightness system. In a systematic survey of lightness errors, it is demonstrated that many of the errors predicted by lightness theories do not occur, and many of the errors that do occur are not predicted by the theories. The computational models fail to account for errors, and error-driven models are proposed here.

Keywords:   lightness, lightness perception, lightness errors, lightness theories, illumination, background, lightness constancy, contrast, illusions

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