Final Multitouch

7/31/2019 Final Multitouch

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MULTI TOUCH(SURFACE COMPUTING)


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HISTORY MT technology began in 1982, when the University of Torontos Input Research

Group developed the first human-input MT system

In 1984, Bell Labs engineered a touch screen which changed images with morethan one hand.

In 1985, the University of Toronto group used capacitance rather than bulkycamera-based optical sensing systems.

In 1991, Pierre Wellner published a paper on his multi-touch Digital Desk,which supported multi-finger and pinching motions.

Apple acquired Fingerworks and its multi-touch technology in 2005

Mainstream exposure to multi-touch technology occurred in 2007 whenthe iPhone gained popularity, with Apple stating they 'invented multi touch.


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THE MULTI TOUCH

TECHNOLOGYSet of interaction techniques allowing

computer users to control graphicalapplications with several fingers.

Multi-touch devices consist of a touchscreen as well as a software capable of

recognizing multiple simultaneoustouch points.


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TOUCH 1.01.

TOUCH 2.02.

TOUCH 3.03.

GENERATIONS


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THE TECHNOLOGY

IMPORTANT TERMS

Hacked Cameras

Cameras which have their IR filters replaced with visiblelight filters, thus seeing only infrared light .

Tracking

The technology that enables multiple fingers to performvarious actions without interrupting each other.
http://dl.maximumpc.com/galleries/multitouch/multitouch1020.png


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BASIC WORKING


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In regards to multitouch, infrared light is mainly usedto distinguish between a visual image on the touchsurface and the object/finger being tracked.

In order to separate the objects being tracked fromthe visual display, a hacked camera is used to only seethe infrared spectrum of light; this cuts out the visual

image from being seen by the camera and therefore,the camera is able to see only the infrared light thatilluminates the object/finger on the touch surface.


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HOW HAS SURFACE CHANGED?

Slim device A richer visual experience. A vision-based touch experience Touch-enabled from start to finish.

New Quick Controls More customization options Easier remote administration Streamlined development for touch


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THE TECHNOLOGY FTIR

1.

PIXELTECHNOLOGY2.


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IMPORTANT TERMS

Frustrated Total Internal Reflection-FTIR is a name used by the multi-touch community to describe an

optical multi-touch methodology developed by Jeff Han .

Compliant Surface

The compliant surface is an overlay placed above the acrylicwaveguide in a FTIR based multi-touch system.

Diffuser-The camera sees only the touches, not all objects behind the

surface because of a diffuser which leaves out the noise data .

Baffle-The baffle is required to hide the light that is leaking from the

sides of the LEDs

Acrylic-

Using acrylic waveguide for screen prevents it from bending .


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FTIR


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- The compliant layer is simply an additional layerbetween the projection surface and the acrylic. Itenhances the finger contact and gives you more robustblobs, particularly when dragging.

- In the FTIR technique, the infrared light is emittedinto side of the acrylic waveguide, the light travelsinside the medium (due to total internal refection),when you touch the surface of the acrylic (you

frustrate this TIR effect) causing the light to refractwithin the medium on points of contact and creatingthe bright blobs. There is much experimentationongoing in the quest for the perfect compliant layer.

BASIC WORKING


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PIXEL SENSING


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BASIC WORKING

A contact (finger/blob/tag/object) is placed on the display

IR back light unit provides light (though the optical sheets, LCDand protection glass) that hits the contact. Light reflected back from the contact is seen by the integrated

sensors Sensors convert the light signal into an electrical signal/valueValues reported from all of the sensors are used to create a

picture of what is on the display The picture is analyzed using image processing techniques The output is sent to the PC. It includes the corrected sensor

image and various contact types (fingers/blobs/tags)


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1)Mitsubish2)Diamond Touch (2001)

3)Microsoft Surface(2007)

4)Elan eFinger5)Apple iPhone (January 2007)6)Meizu M8 (April 2007)7)LG KM900 Arena (February 2009)8)HTC Hero (June 2009)9)Motorola DEXT MB220 (September 2009)10)Motorola Milestone (November 2009)

FIRST DEVICES


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The Microsoft Surface 2.0, a coffee-table-sized, tabletis like a touchscreen computer.

Emerged in 2007 and used cameras and touchscreen to

interact with people and objects. SUR 40 The model available for commercial use is

manufactured in collaboration with Samsung.

Focuses on

1. Commercial business

2. Education

3. Health Care

4. Retail

MICROSFT SURFACE


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SONY ATRACTSYS Few weeks back Sony unveiled its HD screen device

called Sony atracTable. This device has a 35 inch , fullHD touch screen developed by a Swiss company

Actractsys, the atracTable will be launched sometimethis month , and is bringing significant competition toMS.

The Sony atracTable will be able to recognize the

movements made by the users body , and according toSony , the device will also recognize the users age , sexand emotional status .Also interact with movie devicesjust like MS.


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Touch- The Possibilities Make content more engaging. Give your customers immersive

and collaborative ways to engage with photos, videos and more.

Plan and simulate. Bring to life visualization, simulations andcalculations.

Make learning more fun. Breathe new life into the educationprocess with rich visualizations .

Transform the shopping experience. connect customers withmore options, recommendations, product and servicecomparisons, and personalized service.

Connect with customers through games and pastimes. Havesome fun by putting Surface in restaurants, bars etc.

Communicate and connect. Give people an intriguing new wayto get the information (maps and tourist destinations) in a hotel

lobby.


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CASE STUDIES

Royal Bank of CanadaTOUCH 2.0

Hard Rock Caf

TOUCH 1.0

Health Care

TOUCH 2.0

Red Bull

TOUCH 2.0


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1. User gestures, finger movements on screen canactually be used to manipulate digital data.

2. Easy to use

3. Eliminates the hassle of a stylus ,keyboard etc.4. More work by less effort User can pick and drop

the cursor wherever desired.

5. Better working experience- Touching instead of

pressing saves energy.6. Easy to work with- Inexperienced toddlers and old

people can comfortably use it.


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Works CitedDerenelenn, Microsoft Surface: Behind-the-Scenes First Look July 2007 Popular Mechanics.

< http://www.popularmechanics.com/technology/industry/4217348.htm>, diagram drawing by Intoaroute.

Larsen, Larry, First Look: Microsoft Surface Computer! May 30 2007, onTen.net.

Microsoft.com/surface, 2008 Microsoft Corporation.



Blogs.Msdn.com/surface, 2008 Microsoft Corporation.

Pogue, David, Much Ado About MicrosooftsSurface Computer May 31 2007,

The New York Times.

Riley, Duncan, Microsoft Announces Surface Computer May 29 2007, Tech Crunch.


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WE ARE NOW OPEN TO QUESTIONS

Documents

Final Multitouch