FINAL PPT

AUGMENTED REALITY SYSTEMS

Presented by-Dhanashree D.

Pund T.E.I.T ROLL NO.: 20

Guided by-Prof. T. B. KUTE

CONTENTS INTRODUCTION WHAT IS IT? ARCHITECTURE HARDWARE/SOFTWARE HOW DOES IT WORK BASICALLY? FUNCTIONING TECHNOLOGY FEATURES ADVANTAGES DISADVANTAGES APPLICATION CONCLUSION

WHAT IS IT? 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

ARCHITECTURE

EXAMPLE:

HARDWARE

The main hardware components for augmented reality are: display,tracking,input devices, sensors and processor. These elements, specifically CPU, camera, display, accelerometer,Global Positioning System (GPS) and solid state compass are often present in modern smartphones, which make them prospective AR platforms.

DISPLAY

There are three major display techniques for Augmented Reality are Monitor based, Head–Mounted displays, Handheld displays.

MONITOR BASED DISPLAY

HEAD-MOUNTED DISPLAY A Head Mounted Display (HMD) places

images of both the physical world and registered virtual graphical objects over the user's view of the world. The HMD's are either optical see–through or video see–through.

The HMD must be tracked with sensor that provides six degrees of freedom . This tracking allows the system to align virtual information to the physical world.

The graphical information is slaved to the view of the user.

HEAD-MOUNTED(CONTD.)

HAND-HELD DISPLAYHandheld displays employ a

small display that fits in a user's hand. Initially handheld AR employed GPS units and MEMS sensors such as digital compasses and six degrees of freedom.

. Handheld display AR

promises to be the first commercial success for AR technologies. The two main advantages of handheld AR is the portable nature of handheld devices and nature of camera phones.

HAND-HELD(CONTD.)

PROJECTION DISPLAY A Projection

Augmented model (PA model) consists of a physical three-dimensional model onto which a computer image is projected to create a realistic looking object. Importantly, the physical model is the same geometric shape as the object that the PA model depicts.

INPUT DEVICES

Techniques include the pinch glove,a wand with a button and a smartphone that signals its position and orientation from camera images.

SOFTWARE

A key measure of AR systems is how realistically they integrate augmentations with the real world. The software must derive real world coordinates, independent from the camera, from camera images. That process is called image registration.

SOFTWARE(CONTD.) Image registration uses different methods of

computer vision, mostly related to video tracking.

Many computer vision methods of augmented reality are inherited from visual world. Usually those methods consist of two parts. First detect interest points or optical flow in the camera images.

First stage can use feature detection methods like corner detection, blob detection, edge detection or threshold and/or other image processing methods.

Augmented Reality vs.Virtual Reality

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

Virtual Reality: Totally immersive

environment Visual senses are

under control of system.

HOW DOES IT WORK? A range of technologies can be used for augmented

reality. Many augmented reality projects use headgear or a similar device that projects data into the user’s field of vision, corresponding With a real object or space the user is observing.

for example, augmented reality might overlay a schematic diagram onto the inside of a computer, allowing students to identify the various components and access technical specifications about them.

PDAs or other portable devices can use GPS data to provide users with context including visual, audio, or text-based data about real objects or places.

Augmented reality is not merely a companion text or multimedia file but a technology designed to “see” a real object or place and provide the user with appropriate information at the right time.

Augmented reality is designed to blur the line between the reality the user is experiencing and the Content provided by technology.

EXAMPLE:

In MIT’s Environmental Detectives, for example, students learn about environmental sciences and ecosystems by finding clues and solving a mystery on the MIT campus using PDAs fitted with GPS devices.

HUMAN OPERATING WITH AR

Think of a heads up display on your auto windshield, or on the instrument panel. What could be there to help you navigate?

ADVANTAGES

1)Live Implications Augmented reality found in live

advertising of sporting events where advertisements are placed in black spaces on a given field or stadium that are visible to the television viewing public.

Similarly the yellow "first down" lines in NFL games or the color trail of a speeding hockey puck during NHL games are augmented reality aids designed to assist the television spectator.

ADVANTAGES(CONTD.)2) Military and Video Game Applications Military aircraft like the F-35 Lightning II has no

heads up display. Instead enemy aircraft is tracked by the plane's situational awareness and sensor array that displays inside the pilot's flight helmet with uses an augmented reality application to display images in real time.

In a similar fashion many video game creators use augmented reality in their first person shooters. Games like Halo and Unreal Tournament use what's known as "heads up display" that's an augmented reality situation to allow the player access to all their character's states(in a similar way that a fighter pilot would).

DISADVANTAGES

Detractors of augmented reality point to its effect on the young and their ability to separate the fiction from the reality. Three dimensional, real-time running augmented reality programs like "first person shooters" have been believed to increase teen aggression because they normalize violence.

FEATURES

1) Augmented Reality in iPhone Safari browser:

If you have 360 Panorama, once you complete an upload of a panoramic photo you captured, you can use the URL to view it in Safari Mobile or send the link to others for them to check out what you captured.

PERFORMANCE ISSUESAugmented Reality systems are expected: To run in real-time so that the user can

move around freely in the environment Show a properly rendered augmented image

Therefore, two performance criteria are placed on the system:

Update rate for generating the augmenting image

Accuracy of the registration of the real and virtual image

APPLICATIONS

Medical Entertainment Military Training Engineering

Design Robotics and

Telerobotics

Manufacturing, Maintenance, and Repair

Consumer Design

Hazard Detection

Audio

1) ADVERTISEMENT Marketers started to use AR to

promote products via interactive AR applications.

For example, at the 2008 LA Auto Show, Nissan unveiled the concept vehicle Cube and presented visitors with a brochure which, when held against a webcam , showed alternate versions of the vehicle.

In August 2009, Best Buy ran a circular with an augmented reality code that allowed users with a webcam to interact with the product in 3D.

2) TASK SUPPORT Complex tasks such as assembly,

maintenance, and surgery can be simplified by inserting additional information into the field of view.

AR can include images of hidden objects, which can be particularly effective for medical diagnostics or surgery.

Examples include a virtual X-ray view based on prior tomography or on real time images from ultrasound and microconfocal probes or open NMR devices.

3) GOOGLE MOBILE

With Google being the biggest search engine in the world, it's no surprise that this app is available for pretty much every mobile platform.

As with the regular desktop versions of Google, you can use it to search by text and you can also use it to search by location or photos. Using the Google Goggles function, you can take a picture with the phone's camera and run a Google search on it.

For example, you could take a picture of a company logo, a landmark, a book cover or even some text to be translated and the app will come up with all the relevant pages

FUTURE ENHANCEMENT Just imagine! – in the near future, digital signage displays

will become the place where the digital and the real world will blend, giving rise to a fascinating new user experience of mixed realities. Your customers will be able to hold physical objects, such as catalogues, magazines, brochures or any type of packaging, with digital augmentation in their hands. But this is more than just a pipe dream. With an augmented reality-enhanced display system, any kind of digital animation can be augmented in real time with real-world video images to form a totally unique experience. Catalogues can show three-dimensional computer simulations of the products they contain, stories will spring to life and video films will overlie the images in magazines. Brochures will become like magic books when users interact with computer models of the products on offer. The possibilities are endless – just think of your favourite sci-fi movies and you’re maybe half way there already.

CONTD. Even the unlikeliest candidates

such as the US Postal Service, A&E Network, and GE are beginning to show how augmented reality could help us interact with and understand digital content in more interesting ways.

Knowing this, it’s not too farfetched that in the not-too-distant future, augmented reality could actually become as integral to our lives as cell phones and Web 2.0 sites in terms of how it enhances reality and integrates with our surroundings.