CIE
Division 8 - TC8-03: Survey of Gamut Mapping Papers
Motomura, Yamada & Fumoto (1997)
A novel method for gamut mapping called categorical color mapping is suggested
in this paper. This method starts with a categorical segmentation of the
original and reproduction gamuts (in terms of chroma and hue) whereby the
categories are determined on the basis of colour naming and are the following
nine: grey, red, green, yellow, blue, purple, pink, orange and brown. This
is then followed by likeness comparison, which "extracts a pair of points
which gives the highest likeness from [the] same categorical segment".
The reproduced colour is then found by minimising a metric which relates
an original colourís position relative to the centres of categories in
the original gamut and the position of the reproduced colour relative to
the centres of categories in the reproduction gamut. A detailed discussion
of how this is done is given in the paper.
The idea of maintaining colour names in the process of gamut mapping
is certainly of importance. However, whether this criterion alone suffices
for obtaining accurate (or pleasant) reproductions needs to be seen - it
would be particularly interesting to compare this method with algorithms
proposed by other authors.
Last updated: 17 August 1999 by Jan
Morovic