REPRESENTATIVE IMAGE DISPLAY DEVICE AND REPRESENTATIVE IMAGE SELECTION METHOD

A person cluster selection part selects one or more person clusters as representative person clusters in order of largest number of facial images included therein. A unit selection part selects, from each representative person cluster, (i) a unit having the highest likelihood as a first representative unit, and (ii) units in order of lowest likelihood as a second representative unit onward. A representative facial image selection part selects, from each representative unit, (i) a facial image having the highest likelihood as a first representative facial image, and (ii) facial images in order of lowest likelihood as a second representative facial image onward.