A device and method for acquiring captured image data obtained by an unmanned aerial vehicle (UAV), identifying a direction that a target appearing in the captured image data faces, outputting an approach curve used to move the UAV from a current UAV position to a UAV position closer to the face of the person based on the identified direction that the face of the person faces, where the approach curve includes an arc portion connecting the current position to a straight line portion at an approach contact point located a predetermined distance in front of the face of the person, the straight line portion connecting the approach contact point to the position closer to the face of the person.