  In this paper, we propose a novel multi-color balance adjustment for color
constancy. The proposed method, called "n-color balancing," allows us not only
to perfectly correct n target colors on the basis of corresponding ground truth
colors but also to correct colors other than the n colors. In contrast,
although white-balancing can perfectly adjust white, colors other than white
are not considered in the framework of white-balancing in general. In an
experiment, the proposed multi-color balancing is demonstrated to outperform
both conventional white and multi-color balance adjustments including
Bradford's model.
