Color printing.

摘要

Mapping of full-color images to highlight color images which provides excellent results for both pictorial image and presentation graphics applications is described. Shades and tints for each hue in the original full-color image are mapped to a corresponding triangle of colors in the plane of the highlight hue. The apex of the triangle result colors is varied within the triangle of possible result colors, according to hue. Differentiations in the result color for the fully-saturated cases is provided while preserving the relative saturation and lightness behavior. The triangle of result colors matches the triangle of possible colors when the original hue matches the highlight hue. Mappings are provided for printers using red as the highlight color, and also for printers using arbitrary highlight colors. The mappings preserve information important to the viewer while reducing dimensions of the color space. Different information can be preserved depending upon the particular application. <IMAGE>