Augmented Reality (AR) denotes techniques that show real world images or videos combined with additional visual information, must commonly with computer graphics. In contrast to Virtual Reality the focus lies on the real world view, which is enriched by computer graphics which are not used to create an immersive artificial scenario.
To align virtual objects with the real world and to keep them in a stable position, regardless of the motion of the camera, a technique called Camera Tracking is used. A system of sensors calculate the camera’s position and angles and adjusts the computer generated graphics accordingly. Often the camera image suffices as tracking information.