The invention relates to an image processing device and an image processing method. In order to appropriately add markers showing regions to undergo image processing: a region designation unit (1a) designates a processing region (4) in the inner portion of an input image (2); an image processing unit (1b) carries out a prescribed image processing on the processing region (4); a marker region detection unit (1c) detects a marker region (5) to which a marker (6) showing the processing region (4) can be added, in the inner portion of the input image (2); a marker adding unit (1d) determines a position for adding the marker (6) in the marker region (5) on the basis of prescribed priority conditions.