18. The method of claim 17 , further comprising correcting color information of the input image.
17. A method of reproducing an optimized preference color using candidate images and natural language, the method comprising: storing characteristic information of a preference color mapped on a natural language; providing a plurality of candidate images obtained by applying the characteristic information to an original image; and inputting one image, which satisfies a user's preference, among the plurality of candidate images, wherein the characteristic information includes the preference color, and a plurality of characteristics expressed by the natural language for the preference color.