Patent ID: 7515304

Claim:
A profile creation method for creating a profile that associates lattice points defined in an equipment-dependent color space with lattice points defined in an equipment-independent color space, comprising: retrieving, from a memory, a reference profile that associates a plurality of lattice points in the equipment-dependent color space with lattice points in the equipment-independent color space; defining a virtual force that acts on a focused lattice point in the equipment-independent color space, and calculating a position at which the focused lattice point is located in a steady-state in which the virtual force acts on the focused lattice point; retrieving a lattice point in the equipment-dependent color space associated with the position, at which the steady-state focused lattice point is located, from the reference profile, and creating a profile by associating the position of each steady-state focused lattice point with a lattice point in the equipment-dependent color space; and outputting the created profile for use in color conversion of image data, wherein the virtual force includes a resistance whose magnitude is proportional to a speed at which the focused lattice point moves.