1. An apparatus comprising: a management unit that classifies feature patterns for identifying an object, where each pattern includes a plurality of feature amounts corresponding to a plurality of parts of a face region of the object extracted from image data, and that manages the feature patterns using a dictionary; a dividing unit that divides a feature amount of a target part among the plurality of parts of an object of interest, into a plurality of division feature amounts as a plurality of new feature amounts of the target part; and a registration unit that registers, in a case where the dividing unit divides the feature amount of the target part into the plurality of new feature amounts, a plurality of new feature patterns for identifying the object of interest, where the plurality of new feature patterns are obtained by combining each of the plurality of new feature amounts of the target part divided by the dividing unit with feature amounts of parts other than the target part, in the dictionary.