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Volume: 20 | Article ID: art00049
The Challenge of our Unknown Unknowns
  DOI :  10.2352/CIC.2012.20.1.art00049  Published OnlineJanuary 2012

Some topics in color science, for which we hardly know where to look for answers, are discussed, including the following. Why does sharpening color-matching functions lead to better chromatic adaptation transforms? Why do the unique hues occur where they do in color space? Why do effective color-difference formulas have to be so complicated? Why do bluer whites look whiter than neutral whites of the same reflectance, and why is this also true of blacks?

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Robert W.G. Hunt, "The Challenge of our Unknown Unknownsin Proc. IS&T 20th Color and Imaging Conf.,  2012,  pp 275 - 280,

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