4.3 The Knowledge Management Solution 101
■ optical density of color, and
■ color shift when molded under normal and abusive conditions.
The remainder of this section describes how the fuzzy preference
functions were constructed for each attribute.
Color Similarity
Two different ways of rating the quality of a color match are the spec-
tral color curve match and metamerism of the color. Matching the
spectral curve is the best way to match a color for all possible lighting
conditions. Minimizing metamerism, which reduces the color differ-
ence under the most common lighting conditions, is the traditional
way a color match was done before there was a spectr ...