Augmented reality (AR) combines real and virtual objects in real time. AR enhances natural environments with overlays of supplemental information. This document discusses AR definitions, technologies like head-mounted displays and handheld devices, software techniques like SLAM, and applications in various fields like education, gaming, tourism and more. Examples provided include using AR for architectural design, medical training, and GPS navigation. Both opportunities and challenges of AR are addressed.

2. BRIDGING THE REAL WORLD
AND VIRTUAL WORLD
A Look At AUGMENTED REALITY

3. Presented By
-ANAMIKA BHATTACHARYA(10)
-ANURADHA GANAI(15)
-ANWESHA MAITY(18)

4. CONTENT
1. Definition
2. Why augmented reality?
3. Overview of technology
4. Hardware devices
5. Software based Augmented Reality
6. Simultaneous Localization And Mapping
7. Applications
8. Motivations
9. Examples
10.GPS
11.video
12.Advantages
13.Limitation
14.Conclusion

5. Augmented Reality
What’s That??

6. AUGMENTATION
This is a kind of enhancing an object
Reality
The state of things as they actually exist.
Augmented reality = Real world + Virtual world

7. Thus augmented reality is
A live direct or indirect view of a
physical, real-world environment
whose elements are augmented by
computer-generated sensory input
such as sound, video, graphics or
GPS data.

8. WHY AUGMENTED REALITY?
Combines real and virtual object in a real environment.
Runs interactively and in real time.
It is to augment the real world with information handling capabilities.
It superimposes graphics over a real world environment in real time.

9. Overview of the technology
Components:
o Scene Generator
o Tracking System
o Display
o Control
o Data

10. Head Mounted Display
User can simultaneously
view both the real world
and virtual world.
Can be a bit bulky in its
current form

11. Handheld
Devices Most commonly used AR Devices
Uses a variety of Sensors
AR Toolkit is usually used to
map the real world

12. Software Based AR
 Use multiple sensors and tracking devices like GPS, Compasses
etc…
 Are leading the innovation in AR now.
 Two Stages Detection of Interest Points, Mapping the two
worlds.

13. Implementation

14. Software and Technique
AR systems realistically integrate augmentations with the
real world by a process called image registration.
 First detection of interest points.
 Second is restoration of a real world coordinate system
from the data obtained in the first stage [SLAM].

15. Simultaneous Localization And Mapping
 SLAM is a technique to build up a map within a known or
an unknown environment while at the same time keeping
track of the current location.
 Maps are used to determine a location in an environment
and to depict this environment for an overview.

16. How does SLAM work
Takes input
Builds map
using GPS
Locating and
mapping
process repeats
in a loop

17. Challenges faced by SLAM Technology

18. Applications

19. Architecture
AR can aid in visualizing 2
dimensional building projects
in 3D.

20. MEDICAL
• AR can provide the surgeon with
information, which are otherwise
hidden, such as showing the
heartbeat rate, the blood
pressure, the state of the patient’s
organ, etc.
• Also, patients wearing Google
Glass can be reminded to take
medications.

21. Digital Compass
• 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
data.

23. EDUCATION
 AR can be used to have a deeper understanding
about science, biology, etc. E.g. chemical
bonding in molecules or functioning of heart
through AR could give students a much clearer
picture about the process.

24. Gaming
Augmented reality allows gamers to
experience digital game play in a
real world environment.

25. Entertainment
• Making 3D movies
• Transforming 2D movies in 3D

26. ASTRONOMICAL REASEARCH
Star Walk is a star gazers
ultimate app for
finding celestial bodies in
real-time using
augmented reality.

27. Weather Forecast
This is implemented in
Augmented Reality by the
process known as
CHROMA-KEYING.

28. Other Applications of AR
• Military and defense system
• Sports and entertainment
• Sightseeing or Tourism
• Disaster Management
• And Supports many complex tasks….

29. Augmented Reality Today
• AR enhances a user’s perception of
interaction with the real world.
• The virtual objects displays information
that the user can’t directly detect with
his own senses.
• The information conveyed by the virtual
objects helps a user perform real world
tasks.
Motivation:

30. Some easy Examples to make clear
what AR actually is

33. Watch this clip….
GPS Navigation System

35. GLOBAL POSITIONING SYSTEM
 A navigational system involving satellite and
computer that can determine the latitude and
the longitude of the receiver on earth by
computing the time difference of the signal
from different satellite to reach the receiver.

36. GPS NAVIGATIONAL DEVICES

37. Blurs the line between what's real and what's computer-
generated.
Information about the surrounding real world becomes
interactive and digitally manipulable.
Reality with more information added to it that is
normally not available.

38. Expensive to develop and maintain
Lack of Privacy
In case of GPS, we can not view the vehicles who are
passing by as it is dynamic in nature.

40. Thus we conclude,

42. THANK YOU