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Colour perception may optimize biologically relevant surface discriminations – rather than type-I constancy

Published online by Cambridge University Press:  20 August 2002

Nicola Bruno  and
Stephen Westland
Nicola Bruno
Affiliation:
Dipartimento di Psicologia, Università di Trieste, 34143, Trieste, Italynicola.bruno@univ.trieste.itd http://www.psico.univ.trieste.it/users/nick/
Stephen Westland
Affiliation:
Colour and Imaging Institute, University of Derby, Derby, DEE2 3HL, United Kingdoms.westland@colour.derby.ac.uk http://www.colour.derby.ac.uk/colour/people/westland
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Abstract

Trichromacy may result from an adaptation to the regularities in terrestrial illumination. However, we suggest that a complete characterization of the challenges faced by colour perception must include changes in surface surround and illuminant changes due to inter-reflections between surfaces in cluttered scenes. Furthermore, our trichromatic system may have evolved to allow the detection of brownish-reddish edibles against greenish backgrounds. [Shepard]

Type
Brief Report
Information
Behavioral and Brain Sciences , Volume 24 , Issue 4 , August 2001 , pp. 658 - 659
Copyright
© 2001 Cambridge University Press

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