Image process apparatus, image process method and storage medium

摘要

It is provided an image process method comprising an input step of inputting image data, and an under color process step of performing an under color process according to a color region to which the image data belongs, to generate a plurality of component signals including a black component signal, wherein the color region is defined by hue. Therefore, even if the inputted image data includes color components other than an under color component, tonality (i,e., linearity between an inputted value and an output result) can be compensated. <IMAGE>