1. A display system, comprising: a line-of-sight tracking camera configured to detect an eyeball of a driver; first and second stereo cameras configured to photograph a range corresponding to a driver's field-of-view based on stereo camera-based driver's line-of-sight information that is changed based on line-of-sight tracking camera-based driver's line-of-sight information, and provide a photographed image; a controlling unit configured to convert the line-of-sight tracking camera-based driver's line-of-sight information into first and second stereo camera-based driver's line-of-sight information based on pre-stored position information and rotation information of the line-of-sight tracking camera and the first and second stereo cameras, and project the converted information onto the first and second stereo cameras, such that a three-dimensional coordinate of a driver's line-of-sight is calculated; and a storing unit configured to store information related to the display system as well as the position information and the rotation information of the line-of-sight tracking camera and the first and second stereo cameras.