Provided is a technology to identify the number of objects to be identified for each packaging unit with a high degree of accuracy. This object identification device comprises: a comparison unit which compares a captured image with an identification image for identifying objects; and a determination means which, if a plurality of objects are identified as being contained within the captured image, determines whether the plurality of identified objects are articles bundled together in accordance with predetermined conditions, based on a first parameter which represents the geometrical relationship between a first position in a first space, and a second position corresponding to the first position in a second space which represents the image space if the plurality of articles represented by the identification image are bundled together, and a second parameter which represents the geometrical relationship between the first position and a third relationship corresponding to the first position.