augmented reality

Contents IntroductionAugmented realityImplementationAugmented Reality Vs Virtual realityDisplaysAR technologiesAugmented reality applicationsLimitationsLooking into future..Conclusionreferences

Introduction

Augmented reality will truly change the way we view the world. Picture yourself walking or driving down the street with informative graphics appearing 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 presentation , we will take a look at this future technology, its components and how it will be used.

An augmented reality system is one that

Combine real n virtual worldIs interactive in real timeIs registered in 3D.

Augmented Reality System

Augmented RealityAugmented 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

Implementation

To implement there are four things that we require to do find user’s locationfind user’s orientation (view)generating informationaugmenting it to user’s view

Find user’s location

Find user’s orientation (view)

Generate data

Augment generated data to user’s view

Augmented VS Virtual RealityVirtual 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

Here are the three components needed to make an augmented-reality system work: display tracking systemEnvironmental sensing

What makes AR works?

DISPLAYSHead-worn displaysHand held displaysProjection displays

AR TECHNOLOGIES

There are two basic types of AR Technologies:

video see-through optical see-through

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.

Optical See Through DisplayOptical 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.

Augmented Reality ApplicationsMedicalMilitaryEntertainmentEngineering designRobotics and

TeleroboticsManufacturing ,maintain

ence and repairConsumer DesignOnline shopping Augumented mapping

Augmented Reality Applications

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.

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.

Replacement of cell phones: eye dialing, insertion of information directly into environment.

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.

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.

References …http://www.metalliccloud.com/rob/

future_thinking/http://en.wikipedia.org/wiki/

Augmented_realityhttp://www.howstuffworks.com/augmented-reality.htm

http://www.youtube.com/watch?v=tpaJBu4BEuA