Patent ID: 7158260

Claim:
A color conversion apparatus comprising: an input profile storage section for storing a plurality of input profiles with classification into a plurality of groups, said plurality of input profiles each defining an association between coordinate values of a predetermined color space depending on each input device and coordinate values of a color space independent of the input device, said input device reading an image in form of a set of pixels to derive image data in which colors of the pixels are represented by coordinate values within the predetermined color space; an image data obtaining section for obtaining the image data derived from said input device; an image data conversion section for converting the image data obtained by said image data obtaining section into image data in which colors of the pixels are represented by coordinate values of the color space independent of the input device, in accordance with the input profiles stored in said input profile storage section; and a tone alteration section for applying data processing of altering a tone of an image to image data converted in accordance with the input profiles classified into a predetermined group of said plurality of groups, of the image data obtained through conversion by said image data conversion section.