1. A human figure region extraction method for extracting a human figure region in an image, the method comprising the steps of: detecting a face or facial part in the image; determining a candidate region deemed to include the human figure region, based on position information of the face or facial part having been detected; carrying out judgment as to whether each unit region of 2 pixels or more comprising the determined candidate region represents the human figure region; determining a set of the unit regions having been judged to represent the human figure region as an estimated region estimated to include the human figure region; and extracting the human figure region in the determined estimated region.