1. An apparatus comprising: a first management unit configured to classify and manage feature information of a plurality of objects extracted from image data in units of similar feature information; a second management unit configured to classify and manage the plurality of objects extracted from the image data object by object; an association unit configured to associate classifications of the objects by the second management unit with classifications of the feature information by the first management unit; and an input unit configured to input a correction instruction about the classifications of the objects by the second management unit, wherein the association unit is configured to, if the correction instruction is input by the input unit, update an association between the classifications of the objects and the classifications of the feature information based on the correction instruction, and the second management unit is configured to correct and manage the classifications of the objects based on updating of the association by the association unit.