On the dimensionality of the colour world
Résumé
Whereas, for colorimetric purpose, the three-dimensionality of colour cannot be circumvented and clearly refers to cone fundamentals, we examine situations where a reduced or expanded dimensionality could be experienced. Besides the case of individuals such as dichromats who suffer from a limited number of cone photopigments and enjoy two-dimensional colour vision, specific contexts or specific operations may require additional dimensions which could be supported by rod signals or melanopsin signals.
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