An image on an operating surface is captured, and first image data are acquired. A gesture performed by a user on the operating surface is recognized on the basis of the first image data. Whether there is a touch panel sensor configured to acquire coordinates of positions touched by an operation performed by a user on the operating surface or not is determined. In a case where the determination unit determines that there is the touch panel sensor on the operating surface, coordinates of the position on the operating surface touched by the operation performed by the user are identified on the basis of coordinates of a position detected by the touch panel sensor instead of a recognized user's gesture.