This document provides an overview of augmented reality (AR), including its components, technologies, applications, and limitations. AR combines real and virtual elements to enhance one's current perception of reality. Key aspects covered include: AR uses displays, tracking systems, and environmental sensors to overlay virtual images on the real world in real-time; common display types are head-worn, hand-held, and projection; video and optical see-through are the main AR technologies; applications exist in medical, military, engineering, consumer and other fields; and limitations relate to tracking accuracy, computing power and size of AR systems. The future of AR is presented as expanding computer screens into the real environment through virtual overlays.

2. Contents
Introduction
Augmented reality
Implementation
Augmented Reality Vs Virtual reality
Displays
AR technologies
Augmented reality applications
Limitations
Looking into future..
Conclusion
references

3. Introduction
Augmented reality will truly change
the way we view the world. Picture
yourself walking or driving down the
street with informative graphics
appearing 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 presentation , we will take a
look at this future technology, its
components and how it will be used.

4. An augmented reality system is one that
Combine real n virtual world
Is interactive in real time
Is registered in 3D.
Augmented Reality System

5. Augmented Reality
Augmented Reality is a field
of computer research which
deals with combination of
reality with computer
generated data.
It is still in an early stage of
research and development.
possibly by the end of this
decade, we will see the first
mass-marketed augmented-
reality system

6. Implementation
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)
Generate data
Augment generated
data to user’s view

7. Augmented VS Virtual Reality
Virtual reality creates
immersive, computer generated
environments which replaces
real world.
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
computer.
Virtual reality serves for at
totally immersive environment .
The senses are under control of
the system.
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
exists.
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
reality

8. Here are the three components needed to make an augmented-reality
system work:
display
tracking system
Environmental sensing
What makes AR works?

9. DISPLAYS
Head-worn displays
Hand held displays
Projection displays

10. AR TECHNOLOGIES
There are two basic types of AR
Technologies:
 video see-through
optical see-through

11. Video See Through Displays
 They block out the wearer's surrounding environment, using small video
cameras attached to the outside of the goggles to capture images. On
the inside of the display, the video image is played in real-time and the
graphics are superimposed on the video. One problem with the use of
video cameras is that there is more lag, meaning that there is a delay in
image-adjustment when the viewer moves his or her head.

12. Optical See Through Display
Optical see through is not fully realized yet.It is
supposed to consist of ordinary looking pair of glasses
that will have light source on the side to project
images onto the retina.

13. Augmented Reality Applications
Medical
Military
Entertainment
Engineering design
Robotics and Telerobotics
Manufacturing
,maintainence and repair
Consumer Design
Online shopping
Augumented mapping

14. Augmented Reality
Applications

15. Limitations
Accurate tracking and orientation
For wearable augmented reality system, there are still
enough computing power to create stereo 3D
graphics
The size of AR systems is yet another problem.

16. 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
pointing.
Enhanced media application ,like pseudo holographic
virtual screens, virtual surround cinema.
Replacement of cell phones: eye dialing, insertion of
information directly into environment.
Examples might be a virtual wall clock, a to-do list for
the day docked by your bed for you to look at first
thing in the morning, etc.

17. Conclusion
Augmented reality will further blur the line between
what's real and what's computer-generated by
enhancing what we see, hear, feel and smell.

18. References …
http://www.metalliccloud.com/rob/future_thinking/
http://en.wikipedia.org/wiki/Augmented_reality
http://www.howstuffworks.com/augmented-
reality.htm
http://www.youtube.com/watch?v=tpaJBu4BEuA