Patent ID: 7136523
Filing Date: 2006-11-14
Classification: H04N

Abstract:
1. A color correction table forming method of forming a color correction table by performing smoothing, comprising the steps of: setting smoothing conditions respectively corresponding to plural positions on color space; and performing the smoothing according to the smoothing conditions, wherein the plural positions are lattice points on the color space, wherein the smoothing conditions for the lattice points of the color correction table are obtained on the basis of the smoothing conditions corresponding to plural representative colors, wherein the smoothing condition for each lattice point is a limiting value of a color variation before and after the smoothing, and wherein, in a case of setting the smoothing conditions for the lattice points, the limiting values of the lattice points existing between white and each of the plural representative colors and between each of the plural representative colors and black are determined on the basis of the smoothing conditions for the lattice points of the color correction table, the limiting values of the lattice points existing on hue faces of the white, the black and the plural representative colors are determined on the basis of the smoothing conditions for the lattice points of the color correction table, and the limiting value of the lattice point existing between the adjacent two hue faces is determined on the basis of said determined limiting values.