3d volumetric display device for providing user interface using visual indicator and method thereof

Disclosed is a three-dimensional image display device providing a user interface by using a visual indicator. According to an embodiment of the present invention, the three-dimensional image display device includes a recognition unit recognizing an input object within a predetermined three-dimensional recognition space; a determination unit determining a location of the visual indicator based on the recognized input object; and a display unit displaying the corresponding visual indicator in a predetermined three-dimensional image display space based on the determined location of the visual indicator.