communication by perception through tactual interfacing

8/4/2019 Communication by Perception Through Tactual Interfacing

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PERCEPTION THROUGH

TACTUAL INTERFACING

..touch thevirtual

By

V.LAKSHMISAILAJA

III/IV BTECH ECE&

V.SIRISHAIII IV BTECH ECE

From

P.V.P.SIDDHARTHA INSTITUTE OFTECHNOLOGY

VIJAYAWADA



WHAT DOES HAPTICS MEAN?

…………..…..a technology that adds the

sense of touch to virtual

environment.

Haptic interface was developed

when a master-slave system

was proposed by Goertz (1952)



ARCHITECTURE OF

HAPTIC FEEDBACK



ARCHITECTURE FOR HAPTIC

RENDERING



HAPTIC

RENDERINGALGORITHMS

COLLISION

DETECTION

FORCERESPONSE CONTROL



HAPTIC RENDERING TECHNIQUESPRINCIPLES

Point-InteractionA single point is employed for direct

interaction with the userRay-Interaction The user interface mechanism is

modeled in the VIRTUAL environment asa finite ray



LIMITATIONS OF HAPTICDEVICE TECHNOLOGY

Haptic interfaces can only exert forces withlimited magnitude

Haptic devices aren’t ideal force transducers

Haptic device position sensors have finiteresolution



TYPES OF HAPTICDEVICES

3-D

Impedancetype

Admittance type

2-D

Impedance type:

Read position send force

Admittance type:

Read force send position



EXAMPLES OF HAPTIC DEVICES

Logitech mouse phantom

Cyber Glove Cyber



WORKING OF MOTION CAPTURE

GLOVE



HAPTICS



WHERE HAPTICS IS PUT ON?

Haptic technology finds its applications in variousfields such as…………

Surgical simulation & Medical training Physical rehabilitation Training and education Museum display Painting, sculpting and CAD Scientific Visualization Military application Entertainment and so on…..



IMPLEMENTATION IN SINUS SURGERY

A: A haptic – feedback device

B: 3-D display

C: Endoscope-tipped stylus

USED IN BRAILLE PHONE

immense possibility of using mobile

devices by the visually impaired and blind as itis not dependent on the point-and-click

interaction model of the personal computers

Braille phone



PHONE USING THE HAPTIC TECHNOLOGY

uses the technology to provide physical feedback for

making a call

the subject receives tactile stimuli

to the lower neck while learning to control a

robot wheel chair in a simulated

environment

BRAIN COMPUTER INTERFACE

PROSTATE CANCER

A device was developed to minimize the deformation, improving

brachytherapy by increasing the seed distribution accuracy.



HAPTIC TARGETINGWINDOWS TABLETS

VIRTUAL EDUCATION

Haptics open door to an entirely different learning method and style

ROBOT CONTROL

Experiments on robot control using haptic devices have shown the effectiveness of

haptic feedback in a mobile robot tele-operation system

MOBILE PHONES

Samsung has made a phone, which vibrates, differently for different callers.

Motorola too has made haptic phones

Targeting tablets, net books,

notebooks, and ultra-portable PCs,

it offers an “infinite” haptic effects

library, the company adds.



FUTURE

ENHANCEMENTS

irtual Brailee DisplayHaptic torch for blin



MERITS Communication is centered through touch and the digital

world can behave like the real world Working time is reduced Medical field simulators allow would be surgeons to practice

digitally With haptic hardware and software, the designer can

maneuver the part and feel the result, as if he/she were

handling the physical object

DE-MERITS The precision of touch requires a lot of advance design Haptics applications are extremely complex

Not easily portable Debugging issues



CONCLUSION“Haptic Technology” is the only solution whichprovides high range of interaction that cannot beprovided by BMI or virtual reality.

With many new haptic devices being sold toindustrial companies, haptics will soon be a part of aperson’s normal computer interaction.



QUERIES

communication by perception through tactual interfacing

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