skinput
DESCRIPTION
Use Human body as a touch screen.TRANSCRIPT
Seminar Presentationon
Human Body as Touchscreen
SKINPUT
Overview: Introduction What is Skinput Principle of Skinput Requirements How it works Processing Model Advantages Applications Future Implementation Conclusion
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Introduction:
Mobiles becomes ubiquitous
Mobility, flexibility, responsiveness getting more demands
Devices with small sized have some limitations
Can’t make buttons and screens large without losing benefit of
small sized
Microsoft introduces new flesh-control input
technology-”Skinput”2
What is Skinput ? Skinput is an input technology that uses bio-acoustic sensing to
localize finger taps on the skin. When augmented with a pico-
projector, the device can provide a direct manipulation, graphical
user interface on the body.
Touch screen gadgets have become popular due to the advantages
they come with . Skinput turns the body into a touch-screen interface.
Developed by Chris Harrison, Desney Tan, and Dan Morris, at
Microsoft Research's Computational User Experiences Group.3
Principle of Skinput
Skinput allow the users to simply tap their skin in order to control
mobile applications .
It applies the use of series of sensors to determine where user
taps on their arms .
Each part of body creates different types of vibrations depending
on features of bones, muscle and tendons .
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Requirements
Pico-Projector
Bluetooth
Bio-Acoustics
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Pico-Projector Pico projectors are tiny battery powered
projectors - as small as a mobile phone - or
even smaller : these projectors can even be
embedded inside phones or digital cameras.
The system comprises the three main parts:
The laser light source
The combiner optics
The scanning mirror
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Bluetooth
Wireless technology for exchanging data over
short distances.
Bio acoustic and sensors are connected to the
mobile using Bluetooth.
Creating Personal Area Networks (PANs) with
high levels of security.
Created by telecoms vendor Ericsson in 1994.8
Bio-Acoustics
As the skin taps on the skin, acoustic
energies are formed.
Two types of the waves are formed:
Transverse.
Longitudinal.
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Transverse Wave
Sensors are activated by the waves moving underneath it.
Transverse waves formed moves outward form the point of
contact
Tapping on soft regions of the arm creates higher amplitude
transverse waves.
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Longitudinal Wave
Some energy is transmitted inward, toward the skeleton.
These are longitudinal waves, excites the bone.
This excitation vibrates soft tissues surrounding the entire length
of the bone, resulting in new longitudinal waves that propagate
outward to the skin.
The sensor is activated as these waves hits underneath it. 11
Transverse Wave Propagation Longitudinal Wave Propagation
• Finger Impacts creates
transverse waves(ripples)
• Sensor is Activated as wave
passes underneath it
• Finger impact creates
longitudinal
(compressive)waves
• Causes internal skeletal structure
to vibrate.
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Sensing
Instead of a single sensing element with a flat response curve, an
array of highly tuned vibration sensors are used.
Bio –acoustic sensor, its employed with small, cantilevered piezo
films.
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Outside View Inside View
A Wearable Bio-acoustic Sensing Array Built into an Armband. Sensing Elements detect vibrations transmitted through the body. The two sensor packages shown above each contain five specially weighted cantilevered piezo films responsive to a particular frequency range.
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How it Works ?Recognizing Input Locations Finalizing Input Points
Designed Software Listens for impacts & Classifies them. Then Different Interactive Capabilities are bounded on different regions.
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Ten input locations for achieving higher accuracy
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Finger Taps on Arm Generated Signals
Variation in Bone Density, Size & Mass as well as filtering effects from Soft Tissues & Joints Mean Different Locations that are acoustically distinct.
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Vibrations are Captured from Sensors and
Converted to Digital signal form
This is connected to Mobile device Via Bluetooth
A Software to match sound frequencies to Specific skin
location is used
Corresponding Action is implemented in Device
Processing Model
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Advantages User Interface will appear much larger than on screen
No worry about keypad
No need to interact with the gadget directly
Can be used without visual screen
Ideal for anyone with little to or no eyesight
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Applications Mobile
I-Pods
Gaming
Simpler Browsing System
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Mobile
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Gaming , Ipod
Playing Tetris: Using Fingers as Control Pad
Active also in Movable Environment
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Skinput in Future The most profound achievement of Skinput is proving that the
human body can be used as a sensor
A person might walk toward their home, tap their palm to unlock
the door and then tap some virtual buttons on their arm to turn
on the TV and start flipping through the channels
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Future Implementation Extensive Research is going on Currently on
Skinput to
make the armband more smaller.
Incorporate More Devices with This System.
Extend accuracy level
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Conclusion The technology itself is intriguing , and have more application
other than always availability.
Skinput is very interesting technology . But its fate will ultimately
depend on how committed Microsoft is to making it a commercial
reality and how soon.
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THANKYOU
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