Regions outside the surfaces of subject's bodies being emphasized is prevented when generating pseudo three dimensional medical images. An image processing apparatus is equipped with: an image obtaining section, for obtaining a plurality of medical images that represent transverse sections of a subject, which has been imaged in advance; a region classifying section, for classifying regions within each of the plurality of medical images as being one of a subject region that represents the interior of the surface of the subject's body, and a non subject region that represents the exterior of the surface of the subject's body; and a pseudo three dimensional medical image generating section, for generating a pseudo three dimensional medical image by executing an intensity projection method based on image information that represents the plurality of regions which are classified as being subject regions.