1.
Aditya Pandey
04613304409
MCA 5th sem

2.
1. Introduction
2. What is augmented reality?
3. What is Real time information?
4. Components
5. Supporting applications
6. How to use
7. Working
8. Algorithm
9. Steps to create a layar
10. Create virtual objects
11. Features of Layar
12. Challenges
13. Bibliography

3.
o Dutch company based in Amsterdam, created a
mobile augmented reality browser called Layar.
o It shows you what is around you by displaying real
time digital information
o This digital information is called a ‘layer’.

4.
In Layar, an augment is a digital model (2D or 3D)
rendered on a target object as seen through the mobile
phone camera lens
In a general sense, it is any technology that lets you
view digital information within a useful context in the
real world.
Like- Watching sports on television.

5.
Real-time data denotes information that is delivered
immediately after collection. There is no delay in the
timeliness of the information provided.

6.
o Layer definition
o Points of interest(POI) within layer
o Detailed POI

7.
Layer definition is the information about layer, what
kind of task it performs.
e.g.- TravelIndia, to get information about the places
in INDIA.

8.
Point of interests are nothing more than the features
which the layer contains. The points of interest
provide to user by Layar service provider.
e.g.- specific building name.

9.
Detailed Points Of Interest is the detailed information
provided by the developer to user about the point of
interests.
e.g.- information about building.

10.
o Mobile phone camera
o GPS(Global Positioning System)
o Compass
o Accelerometer
o Mobile internet connection

11.
The camera captures the
world as seen through
its lens and shows it on
the screen.
Camera works as an
interface to user.

12.
The GPS is used to
determine the actual
position of the user and
real world objects.
Layar works on the
basis of the position of
the user and the real
world objects, so it is
compulsory to
determine the user
location.

13.
The compass determines
the direction of view and
the direction of the user
and provides the results
to the user
corresponding to the
direction of view.

14.
The accelerometer in the smart-
phones is used to measure the
orientation or vertical and
horizontal positioning of the
phone. The most basic
application of this is the device
knowing when to alternate the
view of the screen depending
on how you are holding it.

15.
Mobile internet
connection is used to
take real time
information about the
world from the web.

16.
o Connect smart-phone to internet.
o Set GPS connection on.
o Open the LAYAR application.
o Select desired layer.
o Select the range(km) of results.
o Launch the Layer.

17.
Content
source

18.
There are two phases which works during the
LAYAR working
o Object detection(detect object)
o Approximations(Represent object)

19.
o The server receives the current GPS coordinates.
GPS( )
{
//code to return GPS coordinates of user.
return(coordinates);
}

20.
o The server receives the current the compass
heading.
Compass( )
{
//code to return Compass heading.
return(heading);
}

21.
o The server runs a collision detection algorithm.
CollisionDetection( Compass, Heading)
{
//detection algorithm code run and gives output
in //TRUE or FALSE
}

22.
o If the adjusted coordinate collides with an existing
Object, the object’s information is returned.
if(TRUE)
{
Information(Object);// returns object info
}

23.
o Information regarding specific events belonging to
that object may then be requested in the form of text
descriptions, photos and videos.

24.
o An approximation is a representation of something
that is not exact, but still close enough to be useful.
o The objects in LAYAR are approximated to be
rectangles.
o The rectangle’s orientation is approximated to be
upright with respect to the north.
o This makes easy to find directions.

25.
Collision Detection-
o detects the collision of two or more objects.
o In layar when the current GPS coordinates collide
with the existing object location then the information
regarding that object visible in users screen.

26.
o Support for 3D models
o Support for animated arguments
o Sharing to Facebook and twitter
o Support audio and video

27.
o support Android 2.2 and above, as well as iPhone 3
and 4, with iOS4.0 and above.
o Tracking quality is dependent on the camera quality
and lighting conditions.
o Fluidity of tracking when in motion is affected by
processing power.

28.
o Not many phones with inbuilt GPS/Compass in
India to provide location based engagement using
AR.
o Video requires 3G and even GPRS has very limited
reach in India with < 5% of total mobile users.

29.
o Smart phones accounting to very minute share on
total phones available in India.
o Application downloads in India are limited due to
many factors like lesser user base with GPRS, slow
speed, cost involved in data pans etc…

30.
ohttp://www.layar.com/
owiki.ansers.com/
ohttp://www.gsmarena.com/glossary.php3?term=accelerometer
ohttp://www.managing-information.org.uk/timeliness.htm
ohttp://www.technologyreview.in/computing/35065/
ohttp://www.chisimba.com/index.phpmodule=news&action=viewsto
ry&id=gen12Srv13Nme4_29458_1286872001
ohttp://layar.pbworks.com/w/page/43908759/Layar%20Vision
%20Index