1. An image processing apparatus comprising: a modification area establishing unit capable to establish a plurality of modification areas on a target image by analyzing the target image; and a modification processing unit that modifies an image within at least one of the plurality of modification areas, wherein each of the plurality of modification areas is established based on a human face in the target image, and the modification processing unit reduces a modification level for the at least one of the plurality of modification area areas in a case that a human face in one of the modification areas corresponding to one human face overlaps a human face in another one of the modification areas corresponding to another human face.