Augmented RealityAugmented Reality

Chris BakerChris Baker

Comp 4640Comp 4640

What is Augmented Reality?What is Augmented Reality?

Augmented realityAugmented reality ( (ARAR) is a field of ) is a field of computer research which deals with the computer research which deals with the combination of real-world and computer-combination of real-world and computer-generated data.generated data.

Most of the AR research is currently Most of the AR research is currently concerned with the use of video imagery concerned with the use of video imagery which is digitally processed and which is digitally processed and augmented by adding computer-augmented by adding computer-generated graphics.generated graphics.

What is AR? (cont.)What is AR? (cont.) Ronald Azuma defines an augmented Ronald Azuma defines an augmented

reality system as one that:reality system as one that:• Combines real and virtual world aspectsCombines real and virtual world aspects• Is interactive in real-timeIs interactive in real-time• Is registered in three dimensionsIs registered in three dimensions

Augmented vs. Virtual RealityAugmented vs. Virtual Reality One of the identifying marks of a virtual reality One of the identifying marks of a virtual reality

system is the head mounted display worn by system is the head mounted display worn by users. users.

These displays block out all the external world These displays block out all the external world and present to the wearer a view that is under and present to the wearer a view that is under the complete control of the computer.the complete control of the computer.

In Augmented Reality, the user must still be In Augmented Reality, the user must still be aware that he or she is present in the “real aware that he or she is present in the “real world.”world.”

How does AR Work?How does AR Work?

The basic idea of augmented reality is to The basic idea of augmented reality is to superimpose graphics, audio and other sense superimpose graphics, audio and other sense enhancements over a real-world environment in enhancements over a real-world environment in real-time.real-time.

The graphics will then change to accommodate The graphics will then change to accommodate the user’s eye or head movements.the user’s eye or head movements.

Simulated augmented reality medical image

What is needed?What is needed? There are three components needed in order to There are three components needed in order to

make an augmented-reality system work:make an augmented-reality system work:• Head-mounted displayHead-mounted display• Tracking systemTracking system• Mobile computing powerMobile computing power

Current Uses of ARCurrent Uses of AR

Yellow first down line Yellow first down line used on TV broadcasts used on TV broadcasts of football games:of football games:• Real world elements: Real world elements:

football field and football field and playersplayers

• Virtual element: the Virtual element: the yellow line drawn yellow line drawn over the image by over the image by computers in real-computers in real-timetime

Current Uses of ARCurrent Uses of AR

HUD (Head Up HUD (Head Up Display):Display):• Used in commercial Used in commercial

aircraft, automobiles, aircraft, automobiles, and other and other applicationsapplications

• Presents data without Presents data without requiring the user to requiring the user to look away from his or look away from his or her usual viewpointher usual viewpoint

LifeClipperLifeClipper LifeClipper is a LifeClipper is a

wearable AR system wearable AR system being used in being used in Switzerland.Switzerland.

When walking around When walking around a chosen culturally a chosen culturally interesting area, the interesting area, the user will feel as user will feel as though they are though they are watching a film.watching a film.

Wikitude – AR Travel GuideWikitude – AR Travel Guide

Mobile travel guide for Mobile travel guide for the Android platform the Android platform (open source OS for cell (open source OS for cell phones).phones).

Plan a trip or find about Plan a trip or find about current surroundings in current surroundings in real-time.real-time.

Future of ARFuture of AR MilitaryMilitary::

• The Office of Naval Research has sponsored AR researchThe Office of Naval Research has sponsored AR research• AR system could provide troops with vital information AR system could provide troops with vital information

about their surroundings.about their surroundings. MedicalMedical::

• Superimpose an image from an MRI onto a patient’s Superimpose an image from an MRI onto a patient’s body.body.

• This might allow surgeons to pinpoint a tumor to This might allow surgeons to pinpoint a tumor to remove.remove.

EducationEducation::• Used in labs where students can learn more about the Used in labs where students can learn more about the

experiments they are participating in.experiments they are participating in.

Future of ARFuture of AR GamingGaming::

• ARQuake is an AR version ARQuake is an AR version of the popular game of the popular game Quake.Quake.

11stst person shooter that person shooter that allows the user to run allows the user to run around in the real around in the real world while playing a world while playing a game in the computer game in the computer generated world.generated world.

Uses GPS, a hybrid Uses GPS, a hybrid magnetic and interial magnetic and interial orientation sensor, gun orientation sensor, gun controller, and a controller, and a standard laptop carried standard laptop carried in a backpack.in a backpack.

Why continue research in AR?Why continue research in AR? AR systems will instantly recognize what AR systems will instantly recognize what

someone is looking at, and retrieve and display someone is looking at, and retrieve and display the data related to that view. the data related to that view.

There are hundreds of potential applications for There are hundreds of potential applications for such a technology, gaming and entertainment such a technology, gaming and entertainment being the most obvious ones. being the most obvious ones.

Any system that gives people instant information, Any system that gives people instant information, requiring no research on their part, is bound to be requiring no research on their part, is bound to be a valuable to anyone in any field. a valuable to anyone in any field.