Patent ID: 7016077
Filing Date: 2006-03-21
Classification: H04N

Abstract:
1. A color image processing apparatus comprising: object color designating means for designating an object color to be converted in an input color image; optimum color setting means for setting an optimum color corresponding to said object color designated by said object color designating means; preliminary lightness conversion amount obtaining means for obtaining a preliminary lightness conversion amount in accordance with a differential value in lightness between said object color and said optimum color; practical lightness conversion amount obtaining means for obtaining a practical lightness conversion amount by compensating said preliminary lightness conversion amount so as to decrease said preliminary lightness conversion amount commensurate with the largeness of said preliminary lightness conversion amount; lightness conversion factor obtaining means for obtaining a lightness conversion factor based on said practical lightness conversion amount, said object color and said optimum color; and lightness converting means for converting the input color image in lightness using said lightness conversion factor to create a lightness-changed color image.