[Problem to be solved] To accurately detect a body motion contained in a radiographic image regardless of imaging conditions or the subject. [Solution] A contrast calculating unit (24) calculates a contrast of a high frequency component and a contrast of a low frequency component of a transformed radiographic image (GO) at an analysis point set by an analysis point setting unit (23). A ratio calculating unit (25) calculates a ratio of the contrast of the high frequency component to the contrast of the low frequency component. A determining unit (26) determines whether or not there is a body motion during an imaging operation to take the radiographic image (GO) based on the ratio. A display control unit (27) displays a result of the determination on a display unit (40).
