Azimuth determination device and azimuth determination method

The invention provides an orientation determination device and an orientation determination method, which can determine orientation without using positioning. An orientation determination device is provided with: a captured image acquisition unit (40) that acquires a captured image (A1) captured by a camera (30) provided to a moving body (1); an orientation information acquisition unit (50) that acquires orientation information (G) indicating an orientation indicated by a prescribed target (F) when the prescribed target (F) indicating the orientation is captured in the captured image (A1); and a viewpoint axis orientation determination unit (52) that determines an orientation to which a viewpoint axis (K) of the camera (30) points on the basis of the orientation information (G) and the positional relationship between the prescribed target (F) in the captured image (A1) and the viewpoint axis (K). 本发明提供方位确定装置和方位确定方法，能够在不使用定位的情况下确定方位。方位确定装置具备：摄影图像取得部(40)，其取得由设置于移动体(1)的摄像头(30)拍摄到的摄影图像(A1)；方位信息取得部(50)，其在所述摄影图像(A1