Image display apparatus and detection method

An image display apparatus is provided which includes an image display unit for displaying a still image or a moving image, an imaging unit for capturing an image in a direction in which the image display unit is displaying the still image or the moving image, a detecting unit for detecting a light emitting unit of a remote controlling device included in the image captured by the imaging unit, and detecting a movement amount of the light emitting unit within the captured image, the remote controlling device controlled by a user, and a control unit for controlling a movement amount of a pointer displayed on the image display unit, depending on the movement amount of the light emitting unit detected by the detecting unit.