Augmented Reality
 
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Abstract
Augmented reality (AR) is a live direct or indirect view of a physical, real-world environment whose elements are augmented (or supplemented) by computer-generated sensory input such as sound, video, graphics or GPS data. (wiki)

Further Reading: 

Reference
  1. Azuma, Ronald T. "A survey of augmented reality." Presence 6.4 (1997): 355-385.
  • Hughes Research Laboratories, Department of Computer Science, University of North Carolina at Chapel Hill
  1. Azuma, Ronald, et al. "Recent advances in augmented reality." IEEE Computer Graphics and Applications, 21.6 (2001): 34-47.
  • Hughes Research Laboratories, Department of Computer Science, University of North Carolina at Chapel Hill
  1. Kato, Hirokazu, and Mark Billinghurst. "Marker tracking and HMD calibration for a video-based augmented reality conferencing system." Proceedings 2nd IEEE and ACM International Workshop on Augmented Reality (IWAR'99).
  1. Schmalstieg, Dieter, and Daniel Wagner. "Experiences with handheld augmented reality." 6th IEEE and ACM International Symposium on Mixed and Augmented Reality, 2007. IEEE ISMAR 2007.