Augmented Reality

Definition

Augmented reality is a form of mixed reality where the live view of a real-world environment is enhanced by virtual (interactive) overlay techniques. The original publication that introduced the term was stated as the opposite of VR; use computers to augment objects in the real world instead of using computers to enclose people in an artificial world (Wellner et al. 1993).

The virtuality continuum proposed by Milgram states that augmented reality is just one expression of a mixed reality, which combines real and virtual (Milgram and Kishino 1994).

An augmented reality system has to fulfill three requirements (Azuma 1997):

• Combine real and virtual

• Interactive in real time

• Registered in 3D

Theory and Application

Augmented reality (AR) is a variation on virtual reality (VR). Unlike VR, the user is with AR not completely immersed in a virtual environment. The characteristic of AR is that the user can see the real world, as it is at that moment, with virtual objects projected on...