Augmented reality
is a direct or indirect view of a physical surrounding whose elements are augmented
by computer-generated sensory input. These sensory inputs may be either sound
video or any data. AR can be associated to a broader concept called mediated reality.
In Mediated reality a view of reality is modified by a computer. As an outcome,
the technology operates by enhancing one’s current perception of reality. By contrast,
virtual reality substitutes the real world with an assumed one.
Augmentation is
conventionally in real-time context with environmental elements, such as sports
scores on TV during a match. With the help of advanced AR technology the data about
the surrounding real world of the user becomes interactive and digitally manipulable.
Artificial information about the environment and its objects can be overlaid on
the real world.
Research explores
the application of computer-generated imagery in live-video streams as a way to
enhance the sensing of the real world. AR technology includes head-mounted displays
and virtual retinal displays for visualisation purposes, and construction of controlled
environments containing sensors and actuators.
Augmented Reality
is considered an extension of Virtual Reality. Virtual Reality is a virtual space
in which players immerse themselves into that space and exceed the bounds of physical
reality. In virtual reality, time, physical laws and substantial properties may
no more be thought of as true, in contrast to the real-world environment.
An important step
of AR systems is how realistically they incorporate augmentations with the real
world. The software must deduce real world coordinates independent from the camera
images. That process is called image registration. Image registration uses several
methods of computer vision, mostly related to video tracking. Many computer vision
methods of augmented reality are inherited from visual odometry.
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