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Augmented Reality

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Title: Augmented Reality


1
Augmented Reality
  • Reality Reinvented

Name Shipra grover Roll no. 2307001 Semester
5th Department Cse
2
Contents
  • Introduction
  • Augmented reality
  • Augmented reality system
  • Augmenting our world
  • Example Wikitude
  • Implementation
  • Components of AR system
  • Head mounted display
  • Video see through
  • Optical see through
  • Tracking orientation
  • Global positioning system
  • Differential GPS
  • Digital compass
  • Mobile computing
  • Augmented Reality Vs Virtual reality
  • History
  • Using Augmented reality
  • Limitations

3
Introduction
  • 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
    used.

4
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

5
Augmented Reality System
An augmented reality system is one that Combine
real n virtual world Is interactive in real
time Is registered in 3D.
6
Augmenting Our World
  • The basic idea of augmented reality is to
    superimpose graphics, audio and other sense
    enhancements over a real-world environment in
    real-time.
  • Sounds pretty simple. Besides, haven't television
    networks been doing that with graphics for
    decades?
  • These systems display graphics for only one point
    of view. Next-generation augmented-reality
    systems will display graphics for each viewer's
    perspective.

7
  • Software based on Augmented Reality
  • Wikitude Wiki attitude

8
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
    smart-phone.

9
Implementation
  • To implement there are four things that we
    require to do find users locationfind users
    orientation (view)generating informationaugmenting
    it to users view

Find users location
Generate data
Augment generated data to users view
Find users orientation (view)
10
Components
Here are the three components needed to make an
augmented-reality system work display
tracking system mobile computing power
11
Head mounted view

12
Head-mounted Displays
  • 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 augmented-reality systems
  • There are two basic types of HMDS
  • video see-through
  • optical see-through

13
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.

14
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.

15
Tracking Orientation
16
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.

17
AR System needs to know two things
  • 2.Where he is looking

1.Where the user is located
18
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.

GPS Network
19
Real Time Differential GPS
  • There are ways to increase tracking accuracy. For
    instance, the military uses multiple GPS signals.
    There is also differential GPS, which involves
    using an area that has already been surveyed. A
    more accurate system being developed, known as
    real-time kinematic GPS, can achieve
    centimeter-level accuracy.

20
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
  • Components
  • Three magnetic sensors
  • One tilt sensor

21
Mobile Computing Power
  • Wearable computers
  • Mobile computing can be accomplished with help
    of wearable computers
  • A wearable computer is a battery powered computer
    system worn on the users body(belt, backpack
    etc).
  • It is designed for mobile predominantly hand
    free operations often incorporating head mounted
    display speech input.

22
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

23
History Development
  • 1962 Morton Heilig, a cinematographer, creates
    a motorcycle simulator called  Sensorama with
    visuals, sound, vibration, and smell.
  •  
  • 1966 Ivan Sutherland invents the head-mounted
    display suggesting it was a window into a
    virtual world.
  •  
  • 1975 Myron Krueger creates Videoplace that
    allows users to interact with virtual objects for
    the first time.
  •  
  • 1989 Jaron Lanier coins the phrase Virtual
    Reality and creates the first commercial business
    around virtual worlds.
  •  

24
History Development
  • 1990 Tom Caudell coins the phrase Augmented
    Reality while at Boeing helping workers assemble
    cables into aircraft.
  • 1994 Milgrim defines a continuum of real to
    virtual reality environments. AR is placed as a
    mixed reality on the continuum spectrum.
  •  
  • 1997 Azuma published a survey paper which
    defined the field of AR.
  •  
  • 2002 Steven Feiner is the leading pioneer of
    augmented reality, and author of the first paper
    on the subject.
  •  Feiner, S. K. "Augmented Reality A New Way
    of Seeing Computer scientists are developing
    systems that can enhance and enrich a user's view
    of the world". Scientific American, April 2002.
  •  

25
History Development
  • 2002Bruce H. Thomas is the inventor of the first
    outdoor augmented reality game ARQuake. His
    current research interests include wearable
    computers, user interfaces, augmented reality,
    virtual reality, computer supported cooperative
    work (CSCW), and tabletop display interfaces.
  •  
  • 2005 Horizon Report Profile Augmented Reality
    as New technology trend to watch. The Report
    predicts that AR technology will emerge more
    fully within 4-5 years.
  •  
  • 2005 Camera system developed that can analyze
    physical environments in real time and relate
    positions between objects and environments. This
    work has become the basis for AR systems to
    integrate reality with virtual objects. 
  •  
  • 2005 Daniel Palanker, Alexander Vankov and Phil
    Huie develop a "bionic eye".
  •  

26
History Development
  • 2007 Facial feature tracking to allow for
    greater control of perspective. For example, a
    conductor could command a certain set of virtual
    instruments with the movement of his eyes. 
  • 2007 Medical applications for users. Sending
    visual cues to help MS patients better keep their
    balance.
  •  
  • 2008 A multiple new innovations and examples of
    AR now exist across a multitude of areas.!
  •  

27
Using Augmented Reality
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
  • Education
  • 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.

28
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.

29
Using Augmented Reality
  • Instant information -Tourists and students could
    use these systems to learn more about a certain
    historical event.
  • 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
    panoramic.

30
Using Augmented Reality
  • Gaming - How cool would it be to take video games
    outside? The game could be projected onto the
    real world around you, and you could, literally,
    be in it as one of the characters. One Australian
    researcher has created a prototype game that
    combines Quake, a popular video game, with
    augmented reality. He put a model of a university
    campus into the game's software. Now, when he
    uses this system, the game surrounds him as he
    walks across campus.

31
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.

32
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.

33
Looking into future .
  • Replacement of cell phones eye dialing,
    insertion of information directly into
    environment.
  • Virtual conferences in "holodeck" style .
  • 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.

34
Looking into future.
  • Enhanced media applications, like pseudo
    holographic virtual screens, virtual surround
    cinema, virtual 'holodecks' (allowing
    computer-generated imagery to interact with live
    entertainers and audience)
  • And the list goes on as your imagination.

35
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.

36
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?vtpaJBu4BEuA

37
Thank you
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