Augmented reality system
Augmenting our world
Example – Wikitude
Components of AR system
Head mounted display
Video see through
Optical see through
Tracking & orientation
Global positioning system
Augmented Reality Vs Virtual reality
Using Augmented reality
Looking into future..
Augmented reality will truly change the way we view the world. Picture
yourself walking or driving down the street. With augmented-reality
displays, which will eventually look much like a normal pair of glasses,
informative graphics will appear in your field of view, and audio will
coincide with whatever you see. These enhancements will be refreshed
continually to reflect the movements of your head. In this article, we will
take a look at this future technology, its components and how it will be
An augmented reality system is one that
Combine real n virtual world
Is interactive in real time
Is registered in 3D.
Augmented Reality System
Software based on
Augmented Reality …
Wikitude – Wiki attitude
Wikitude –wiki attitude
WIKITUDE World Browser
presents the user with data about
their surroundings, nearby
landmarks, and other points of
interest by overlaying information
on the real-time camera view of a
To implement there are four things that we require to do find
user’s locationfind user’s orientation (view)generating
informationaugmenting it to user’s view
Find user’s location
Find user’s orientation (view)
data to user’s view
Here are the three components needed to make an augmented-reality
mobile computing power
Just as monitors allow us to see text
and graphics generated by
computers, head-mounted displays
(HMDs) will enable us to view
graphics and text created by
There are two basic types of HMDS:
Tracking and Orientation
The biggest challenge facing developers of
augmented reality is the need to know where the user
is located in reference to his or her surroundings.
There's also the additional problem of tracking the
movement of users' eyes and heads.
GPS – Tracking Technology
Currently, the best tracking
technology available for large open
areas is the
Global Positioning System.
However, GPS receivers have an
accuracy of about 10 to 30 meters,
which is not bad in the grand
scheme of things, but isn't good
enough for augmented reality,
which needs accuracy measured in
millimeters or smaller.
A digital compass consists of
sensors to measure the earth's
magnetic field, some conditioning
of those sensor signals, and a
microcontroller to interpret the
Three magnetic sensors
One tilt sensor
Mobile Computing Power
Mobile computing can be accomplished with help of
A wearable computer is a battery powered computer
system worn on the user’s body(belt, backpack etc).
It is designed for mobile & predominantly hand free
operations often incorporating head mounted display
& speech input.
Augmented VS Virtual Reality
Virtual reality creates
immersive, computer generated
environments which replaces
Here the head mounted
displays block out all the
external world from the viewer
and present a view that is under
the complete control of the
Virtual reality serves for at
totally immersive environment .
The senses are under control of
The user is completely
immersed is an artificial world
and cut off from real world.
Augmented reality is closer to
the real world. augmented
reality add graphics, sounds &
smell to the natural world, as it
Thus it augments the real
world scene in such a way that
the user can maintain a sense of
presence in that world.
That is ,the user can interact
with the real world, and at the
same time can see, both the real
and virtual world co-existing.
User is not cut off from the
Using Augmented Reality
In an Augmented Reality interface
students can be seated around a table
and see each other at the same time as
a virtual heart floating in their midst.
This results in conversational behavior
that is more similar to natural face-to-
face collaboration than to screen
based collaboration [Kiyokawa 2002].
Once researchers overcome the challenges that face them, augmented
reality will likely pervade every corner of our lives. It has the potential
to be used in almost every industry, including:
Using Augmented Reality
Military - The military has been devising uses for
augmented reality for decades. The idea here is that an
augmented-reality system could provide troops with
vital information about their surroundings, such as
showing where entrances are on the opposite end of
a building, somewhat like X-ray vision.
Augmented reality displays
could also highlight troop
movements, and give soldiers
the ability to move to where
the enemy can't see them.
Using Augmented Reality
Instant information -Tourists and students could
use these systems to learn more about a certain
Imagine walking onto a Civil War battlefield and
seeing a re-creation of historical events on a head-
mounted, augmented-reality display. It would
immerse you in the event, and the view would be
Accurate tracking and orientation
For wearable augmented reality system, there are still
enough computing power to create stereo 3D
The size of AR systems is yet another problem.
Looking into future ……
Expanding a PC screen to real environment..program
windows & icons appear as virtual devices in real
space & are eye or gesture operated, by gazing or
Enhanced media application ,like pseudo holographic
virtual screens, virtual surround cinema.