IMAGE PROCESSING APPARATUS, METHOD, AND PROGRAM-RECORDED STORAGE MEDIUM

摘要

A gradation correcting curve to correct a gradation of an input image is generated. Gradation correction based on the gradation correcting curve is made to a boundary pixel of a color reproduction space at the same saturation as that of a target lattice point and at a hue of the target lattice point. An equal saturation line is set by using the boundary pixel of the color reproduction space after the gradation correction. A saturation correction amount of the target lattice point is decided based on the gradation correcting curve and the equal saturation line.