DISPLAY DEVICE, DISPLAY METHOD, AND PROGRAM

A display device (3) according to the present disclosure includes: an imaging unit (31) that images a subject and generates a captured image; an imaging position calculation unit (35) that calculates an imaging absolute position that is an absolute position of the imaging unit (31); an equipment information acquisition unit (36) that acquires an equipment absolute position that is an absolute position of equipment on the basis of the imaging absolute position; a relative position calculation unit (37) that calculates a relative position of the equipment with respect to the imaging unit on the basis of the imaging absolute position and the equipment absolute position; an image superimposition unit (38) that generates a superimposed image in which the object corresponding to the equipment is superimposed on the captured image on the basis of the relative position; and a display unit (39) that displays the superimposed image.