Vijay MULTI TOUCH Final

8/6/2019 Vijay MULTI TOUCH Final

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SEMINAR REPORTS

Bijay Kumar Saha

Regd no:0601227174

Branch-IT



Contents««



` A t c scree is a ispla w ic ca etect t e

prese ce a l cati f a t c wit i t e ispla

area.

` O e p i t f c tact at a ti e.



` Multi-t uch technology is an a vance human-

com puter interaction technique that recogonises

multiple touch points and also includes the har dwaredevices that im plement it, which allow users to

com pute without conventional in put devices .



` Multi-touch technology dates back to 98 , when theUniversity of or onto develo ped the first finger pressure

multi-touch.

` In 98 ell Labs engineered a multi-touch screen that

could manipulate images with more than one hand.

` In1991 Pierre Wellner pu blished a paper on his multi-

touch ³Digital Desk´, which su pported multi-finger and

pinching motions.

` In 1998, Fingerwor k s, pr oduced a line of multi-touch

pr oducts including the iGesture Pad and the ouchStream

k ey boar d.

Histor y of Multi ouch«



` Various com panies expanded u pon these discoveries

in the beginning of the twentyfirst centur y.

` Mainstream exposure to multi-touch technology

occurred in the year .

� Recent Development«.



Micr osoft

Per ceptive

Pixel

A pple



In 2001 Steve Bathiche and Andy Wilson of Microsoftbegan work on an idea for an interactive table that mixesboth physical and virtual worlds.

In 2007 Microsoft introduced Microsoft Surface.

Intel Core 2 Duo processor, Windows Vista, and 2 GB ofRAM.



Ipods

Transferring music between

Ipods

Photo Sharing and multimedia



` PP is a com pany f ounded by New Yor k University consulting resear ch scientist Jefferson Y. Han that

creates wall displays and tables.

` It can accommodate u p to 20 fingers.

intr oduced the FTIR technique to multi touch screens.

` PP¶s echnology is currently being utilized in the

f or m of Multi- ouch CollaborationWall, by



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Products of Apple««



` Total inter nal reflection is an o ptical phenomenon that occurs when

a ray of light strik es a medium boundar y at an angle lar ger than the

critical angle with respect to the nor mal to the surface.

` The critical angle is the angle of incidence above which totalinter nal reflection occurs.

` The critical angle is given by:

n2= Refractive index of the less den se medium.

n1= Refractive index of the den ser medium.



Total Internal Reflection



` REQUIREMENTS

HARDWARE

SOFTWARE



IR led¶s Acrylic Camera Projector Computer



Acrylic with led¶s at its edges



Processing(P5)

Flash C C++ Java



IR rays obtained on a camera



(a) IR view of a touch(b)Pixel positions located on screen

Frustrated Total Internal Reflection



` Low cost factor.

` Su pport high-resolution graphics.

`

Any k ind of applications can be made to suit multi touch using FTI .

` Lar ger shared-display systems.

` It acquires tr ue touch image inf or mation at high spatial and

tem poral resolutions.



` Personal com puters, Lapto ps ,Tableto ps , Graphics Tablets .

` It su pports both LCD and C T monitors .

` T

elephones ,Watches ,PDAs, Mo bile phones.` Advanced multi touch Gaming with high graphics su pport.

` Gover nmental, office and business purposes.

` An enhanced multimedia experience including audio , video

and photo sharing.

` Enhanced dining experienceA pplications.



` Touch screens are the interface f or the 1st centur y. Touch

screens address the conflicting demands f or smaller portable

electr onics with lar ger displays, by eliminating traditional

buttons without sacrificing screen size. The recent release of

the iPhone has created a buzz ar ound touch screen interfaces

and its multi-touch acr o batics have caught the eye of many

industr y leaders.

Vijay MULTI TOUCH Final

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