1. An image correction method, comprising: identifying first pixels that satisfy one of predetermined conditions as to a pixel level, which are set for each color component, among pixels included in a specific image; identifying second pixels that satisfy a plurality of predetermined conditions as to said pixel level, which are set for each said color component, among said pixels included in said specific image; calculating an evaluation value relating to a duplication degree of said first pixels and said second pixels; and correcting said specific image based on said evaluation value.