COLOR CONVERSION DEVICE, COLOR CONVERSION METHOD, COLOR CONVERSION PROGRAM

摘要

PROBLEM TO BE SOLVED: To improve memory access efficiency and to reduce interpolation calculation processing quantity by color conversion processing using LUT of two or more dimensions. SOLUTION: The color conversion device is provided with: a color value acquisition section for acquiring color value of a point belonging to a first color space of a color conversion object; a reference area determination section for determining an area for the point of object for color conversion in a plurality of areas of the first color space based on the color value; a small area determination section for dividing into a plurality of small areas with points of division fewer than 2npieces in 2npieces of points of division constituting the determined area by the reference area determination section as top-most vertices and determining which of small areas is the point of object for color conversion belonged to; a color conversion value acquisition section for acquiring the color conversion value corresponding to the point of division constituting the determined area from the predetermined storage region; and an interpolation calculation section for interpolating a color value of point in a second color space corresponding to the color value of point in the first color space based on it. The storage addresses of color conversion values corresponding to the points of division constituting small areas of n-dimensional LUT are stored so as to be adjacent to each other. COPYRIGHT: (C)2009,JPO&INPIT