Post on 07-Apr-2018
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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
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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)
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ARCHITECTURE OF
HAPTIC FEEDBACK
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ARCHITECTURE FOR HAPTIC
RENDERING
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HAPTIC
RENDERINGALGORITHMS
COLLISION
DETECTION
FORCERESPONSE CONTROL
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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
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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
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TYPES OF HAPTICDEVICES
3-D
Impedancetype
Admittance type
2-D
Impedance type:
Read position send force
Admittance type:
Read force send position
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EXAMPLES OF HAPTIC DEVICES
Logitech mouse phantom
Cyber Glove Cyber
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WORKING OF MOTION CAPTURE
GLOVE
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HAPTICS
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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…..
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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
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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.
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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.
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FUTURE
ENHANCEMENTS
irtual Brailee DisplayHaptic torch for blin
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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
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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.
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QUERIES