Parametric Gamut Mapping Algorithms Using Variable Anchor Points

In this article, a new gamut-mapping algorithm (GMA) that utilizes variable anchor points (center of gravity on the lightness axis) is proposed. The proposed algorithm increases lightness range, which is reduced from conventional gamut mapping toward an anchor point. In this process, this algorithm utilizes multiple anchor points with constant slopes to both reduce a sudden color change on the gamut boundary of the printer and to maintain a uniform color change during the mapping process. Accordingly, the proposed algorithm can reproduce high quality images with low-cost color devices.