AUGMENTED REALITY

Rishabh SrivastavaCS-III

BBDESGI

1150810039

2013-14

Seminar Report

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.

Milgram’s Reality-Virtuality

Continuum

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

HARDWARE[Contd.]

HARDWARE[Contd.]

Displays:

o HMDs

o Hand-Held Devices

o Glasses

o Contact Lenses

HMDs

US Airforce AR Simulation

A person with VR HMD

Hand Held Devices

GLASSES

Google Glass

AR Glass Prototype

GLASSES[Contd.]

CONTACT LENSES

iScan Lens

SENSORS

o GPS sensors

o Solid State Compass

o Accelerometer

o Gyroscopes

o Proximity 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

Layar Webpage

[ http://www.layar.com ]

Earthmine app

APPLICATIONS OF

AR

• ARCHAEOLOGY

• ARCHITECTURE

• CONSTRUCTION

• GAMING

• NAVIGATION

• SPORTS

• MILITARY

ARCHAEOLOGYARCHITECTURE

CONSTRUCTION

GAMING EARTHMINE APP

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

THANK

YOU