Patent ID: 7782492

Claim:
A method of generating mapping data for converting first image data adapted to be reproduced by a first imaging device having a first gamut to second image data adapted to be reproduced by a second imaging device having a second gamut which is different from the first gamut, the method comprising: determining a third gamut so as to include the first gamut and the second gamut; extending the first gamut to the third gamut to obtain first mapping relationships; compressing the third gamut to obtain second mapping relationships; and generating the mapping data associating first colors included in the first gamut with second colors included in the second gamut by way of the first mapping relationships and the second mapping relationships, wherein the extending and the compressing are performed except for a portion of an overlap of the first gamut and the second gamut, the overlap of the first gamut and the second gamut including colors which can be reproduced in both the first gamut and the second gamut.