Minimalist surface-colour matching |
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Authors: | Amano Kinjiro Foster David H Nascimento Sérgio M C |
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Institution: | Computational Neuroscience Group, Faculty of Life Sciences, University of Manchester, Manchester M60 1QD, UK. k.amano@manchester.ac.uk |
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Abstract: | Some theories of surface-colour perception assume that observers estimate the illuminant on a scene so that its effects can be discounted. A critical test of this interpretation of colour constancy is whether surface-colour matching is worse when the number of surfaces in a scene is so small that any illuminant estimate is unreliable. In the experiment reported here, observers made asymmetric colour matches between pairs of simultaneously presented Mondrian-like patterns under different daylights. The patterns had either 49 surfaces or a minimal 2 surfaces. No significant effect of number was found, suggesting that illuminant estimates are unnecessary for surface-colour matching. |
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