The Challenge of our Unknown Unknowns

摘要

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?