IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD, AND CONTROL PROGRAM

An image processing device (31) according to one aspect of the present invention performs image processing on a facial image including a mouth of a person, the image processing device including a teeth color similarity identification unit (51) configured to identify, based on a difference between a color of the location and a representative color of the teeth, a likelihood of a location being the tooth as a first organ likelihood for each location of a first region including at least a part of the mouth of the facial image; a teeth location weight determination unit (52) configured to determine a first weight so that the first weight becomes smaller the greater a distance from a first location of the first region; a teeth correction degree determination unit (53) configured to determine a correction degree of the location so that the correction degree becomes greater the greater the first organ likelihood and the first weight; and a teeth image correction unit (54) configured to correct an image using the correction degree.