about Augmented Reality

2. Daffodil International university
Department of Computer Science & Engineering
Course Title: Computer Graphics
Course Code: CSE 421

4. Augmented Reality (AR) is a
technology enriching the real
world with digital information and
media, such as 3D models and
videos, overlaying in real-time the
camera view of your smartphone,
tablet, PC or connected glasses.

5. Marker
1. Marker Based
2. Marker Less
Normal
1. Projection based
2. Recognition based
3. Location based
4. Outlining based
5. Superimposing based

6. • Marker-Based AR : Marker-
Based AR is also called Image
Recognition or Recognition
based AR. In simple words, this
technology uses the camera in
AR device to produce a result.
QR and 2D are the examples of
the visual marker. The users get
the result when camera reader
senses the marker.

7. • It detects the object in front of the camera and gives information
about the detected object on the screen.
• It translates the words seen by the camera using Optical Character
Recognition technology and shows them with the translated version.
• The technology is also useful in education as it can help students to
bring their imagination turned into reality.
• It also helps in creating 3D simulations of the objects or architectures
without building it in physical form.

8. • Marker-Less AR : Marker-less
Augmented Reality is also called
location-based AR. It is one of
the most widely used and
implemented type of
technology. Marker-less is also
known as position based AR and
GPS based Augmented
Technology.

9. • The location tools are as follows: GPS, digital compass, velocity
meter and, accelerometer.
• This technology proves as a helping hand to voracious travelers in
detecting their locations/destinations and works by recognizing the
current location of the user.
• It detects orientation, reads the data through GPS and predicts the
locations where the user wants to go and finally show the relevant
information on their screen of user’s Smartphone.
• Mapping the directions and searching the nearby places are other
uses of location-based AR.

10. • Evident to its name this technology is
based on AR projection function,
where lights from the device
projected on the objects.
There are numerous approaches
which make this technology more
interesting. One of the approaches is
throwing the light onto the surface of
the real world and makes it interactive
by the human touch with the help of
sensors. The projection can also be
done in mid-air with the help of laser
plasma technology. It helps in
studying the structure and
configurations of projected images.

11. When the light of the calculator is thrown
through projection-based AR device on your
palm the 12 partitions in your hand will become
12 buttons and a user can touch these buttons
and can interact with them.

12. Recognition based AR focuses on
recognition of objects and then
provide us more information about
the object. e.g. when using your
mobile phone to scan a barcode or
QR code, you actually use object
recognition technology. Fact is,
except location based AR systems, all
other types do use some type of
recognition system to detect the
type of object over which
augmentation has to be done.

13. Once the recognition is complete, it replaces the
marker on screen with a 3D version of the
corresponding object. This allows the user to
investigate the object in more detail and from
various angles. Rotating the marker would rotate
the 3D imagery as well.

14. • Location based AR is taking
advantage of the smart devices’
location detection features. If
you’re a traveler and you want
to discover new great places,
this method will use your
location by reading your smart
device’s GPS, compass and
accelerometer and give you
relevant information about what
you’re looking for on your
screen.

15. • Though the human eye is known to
be the best camera in the world,
there are limitations. We cannot
look at things for too long. We
cannot see well in low light
conditions and sure as anything,
your eye cannot see in infrared. For
such cases, special cameras were
built. Augmented reality apps
which perform outlining use such
cameras.

16. When driving a car on a road in foggy weather, the boundaries
of the road may not be very visible to the human eye, leading
to mishaps. Advanced cameras tuned specially to see the
surroundings in low light conditions can be used to outline the
road boundaries within which the car should stay. Such a
system would prove very useful in avoiding accidents. With
extra sensors capable of detecting objects around (e.g. by
using ultrasound) the overall risk of hitting some living object
can be minimized as well.

17. • It is indeed one of the most
important types of technology
where object recognition plays
an important role. In this
technology, the augmented
image can replace the original
image, either partially or fully.
The technology is useful in the
medical field. A doctor can
thoroughly examine patient and
gives a proper treatment.

18. • The technology is also helpful in a military application as
superimposition based AR can offer multiple views of a target without
any distraction. This technology would be a boon for history lovers as
a superimposition of ancient images over current one can reveal lots
of secret about the past. It can also help in making science education
more interesting for example, studying bone structure.

19. • You can see holograms and manipulate
3D models. Hundreds of Augmented
Reality apps are available on iPhone,
iPad, and Android.
• Augmented Reality works through a
webcam and relayed through the
screen. This can be quite cumbersome
when you have to manipulate a tracker
in front of your screen.
• On head mounted displays, glasses, and
lenses, Augmented Reality becomes a
part of your entire field of view, making
for more life-like Augmented Reality
experiences. It almost feels like Ironman
with the help of Jarvis.

20. • It allow users to place life-size
3D models in your environment
with or without the use of
trackers. Trackers are simple
images that 3D models can be
attached to in Augmented
Reality.

21. • It enrich your camera display
with contextual information.
For example, you can point
your smartphone at a
building to display its history
or estimated value.

22. • it creating immersive gaming
experiences that utilize your
actual surroundings. Imagine
shooting games with zombies
walking in your own bedroom!
The biggest use of Augmented
Reality gaming to-date is
Pokémon Go, allowing users to
catch virtual Pokémon who are
hidden throughout a map of
the real world.

24. ??