augmented reality
TRANSCRIPT
What Is Augmented Reality (AR)?
• A combination of – a real scene viewed by a
user and
– a virtual scene generated by a computer that augments the scene with additional information.
Augmented Reality
•System augments the real
world scene
•User maintains a sense of
presence in real world
•Needs a mechanism to
combine virtual and real
worlds
•Hard to register real and
virtual
Virtual Reality
•Totally immersive
environment
•Senses are under control of
system
•Need a mechanism to feed
virtual world to user
•Hard to make VR world
interesting
AUGMENTED REALITY
versus
VIRTUAL REALITY
TECHNOLOGY USED
HARDWARE: The kind of hardware
used is determined by the process for
which the AR system is being developed.
• Processor
• Input Devices
• Display Device
• Sensors
SOFTWARE
“How realistically well the software
integrates the augmentation with the
real world.”o Derive real-world coordinates through
the images from camera.
o The above process is called image
registration.
o The registered images are then
mapped with relevant virtual data by the
inbuilt computer.
o Simultaneous Localization and
Mapping (SLAM)
SOFTWARE[Contd.]
o Augmented Reality Markup Language
(ARML) [developed within the Open
Geospatial Consortium (OGC)]
o AR SDKs:
o Metaio
o Vuforia
o Wikitude
o Layar
APPLICATIONS OF
AR
• ARCHAEOLOGY
• ARCHITECTURE
• CONSTRUCTION
• GAMING
• NAVIGATION
• SPORTS
• MILITARY
WAYS TO TRY AR YOURSELF:
• Layar Browser
• Google Glasses (App)
• Google Glass
• Copter Attack (Android Game)
• Augment (Android App)
• Nokia City Lens (Windows Phone)
PROBLEMS OF
AR
• Measured location may not be
accurate.
• May cause visible registration error.
• Environment may be cluttered with
information and become unreadable.
• Real time rendering problems.
Visualization Problems:
PROBLEMS OF
AR
Perceptual and Human Factors:
• Depth perception
• Adaptation
• Fatigue and eye strain