30-03-2010, 09:29 PM
Haptics ËœTouch the virtualâ„¢
Presented By:
NIKHIL JS
Roll no:20
ËœHapticsâ„¢ is derived from the Greek word Ëœhaptikosâ„¢
which means-being able to come into contact with
THE SCIENCE OF TOUCH
Virtual Reality
Virtual reality is a form of human-computer interaction providing a virtual environment that one can explore
through direct interaction with our senses.
Itâ„¢s a mere imitation of the real world.
In order to complete the imitation of the real world one should be able to interact with the environment and get a
feedback.
User should be able to touch the virtual object and feel a response from it.
This feedback is called Haptic Feedback.
Basic idea
Haptics, is the technology of adding the sensation of touch and feeling to computers.
A haptic device gives people a sense of touch with computer-generated environments, so that when virtual objects
are touched, they seem real and tangible.
Understanding and enabling a compelling experience of Presence not limited to "being there", but extended to "being
in touch" with remote or virtual surroundings
The Technology
Haptics is implemented through different type of interactions with a haptic device communicating with the
computer. These interactions can be categorized into the different types of touch sensations a user can receive:
Force feedback
Tactail feedback
Force feedback
It reproduces the directional forces that can result from solid boundaries.
E.g. the weight of virtual objects, inertia, etc.
Tactile feedback
Refers to the sensations felt by the skin.
It allows the user to feel things such as the texture of surfaces, temperature and vibration.
Data transfer
Virtual Reality Modeling language (VRML)
Tells the interface how much force the haptic device should return when it is touched.
How it works?
Haptic devices
It allows users to touch, feel and manipulate
3-D objects in virtual environments. Two types are
Ground based
Body based
How are Haptic devices different?
Common interface devices like mouse and joystick are only input devices. No feedback.
Haptic devices are input-output devices.
THE NOVINT FALCON
THE NOVINT FALCON
The Novint Falcon is the first haptic interface device to
bring 3D touch.
As the Novint Falcon is moved, the computer keeps track of a 3D cursor.
When the 3D cursor touches a virtual object, the computer registers contact with that object.
And updates currents to motors in the device to create an appropriate force to the deviceâ„¢s handle, which the user
feels.
Exoskeletons
large and immobile systems that the user must attach him or herself to.
their large size and immobile nature allow for the generation of large and varied force information.
Gloves and wearable devices
The user can move naturally without being weighed down by a large exoskeleton or immobile device
E.g. Hand Master
Working
Locomotion interface and full body force feedback
In a confined space, simulate unrestrained human mobility such as walking and running for virtual reality.
Applications
Virtual reality
Virtual surgery Surgery
Tele-presence Tele-presence
Human assistive devices Slide 23
Games
Surgery
Tele-presence
Conclusion
The next important step towards realistically simulated environments that have been envisioned by science fiction
authors and futurists alike.
Large potential for applications in critical fields as well as for leisurely pleasures.
Haptic devices must be miniaturized so that they are lighter, simpler and
Presented By:
NIKHIL JS
Roll no:20
ËœHapticsâ„¢ is derived from the Greek word Ëœhaptikosâ„¢
which means-being able to come into contact with
THE SCIENCE OF TOUCH
Virtual Reality
Virtual reality is a form of human-computer interaction providing a virtual environment that one can explore
through direct interaction with our senses.
Itâ„¢s a mere imitation of the real world.
In order to complete the imitation of the real world one should be able to interact with the environment and get a
feedback.
User should be able to touch the virtual object and feel a response from it.
This feedback is called Haptic Feedback.
Basic idea
Haptics, is the technology of adding the sensation of touch and feeling to computers.
A haptic device gives people a sense of touch with computer-generated environments, so that when virtual objects
are touched, they seem real and tangible.
Understanding and enabling a compelling experience of Presence not limited to "being there", but extended to "being
in touch" with remote or virtual surroundings
The Technology
Haptics is implemented through different type of interactions with a haptic device communicating with the
computer. These interactions can be categorized into the different types of touch sensations a user can receive:
Force feedback
Tactail feedback
Force feedback
It reproduces the directional forces that can result from solid boundaries.
E.g. the weight of virtual objects, inertia, etc.
Tactile feedback
Refers to the sensations felt by the skin.
It allows the user to feel things such as the texture of surfaces, temperature and vibration.
Data transfer
Virtual Reality Modeling language (VRML)
Tells the interface how much force the haptic device should return when it is touched.
How it works?
Haptic devices
It allows users to touch, feel and manipulate
3-D objects in virtual environments. Two types are
Ground based
Body based
How are Haptic devices different?
Common interface devices like mouse and joystick are only input devices. No feedback.
Haptic devices are input-output devices.
THE NOVINT FALCON
THE NOVINT FALCON
The Novint Falcon is the first haptic interface device to
bring 3D touch.
As the Novint Falcon is moved, the computer keeps track of a 3D cursor.
When the 3D cursor touches a virtual object, the computer registers contact with that object.
And updates currents to motors in the device to create an appropriate force to the deviceâ„¢s handle, which the user
feels.
Exoskeletons
large and immobile systems that the user must attach him or herself to.
their large size and immobile nature allow for the generation of large and varied force information.
Gloves and wearable devices
The user can move naturally without being weighed down by a large exoskeleton or immobile device
E.g. Hand Master
Working
Locomotion interface and full body force feedback
In a confined space, simulate unrestrained human mobility such as walking and running for virtual reality.
Applications
Virtual reality
Virtual surgery Surgery
Tele-presence Tele-presence
Human assistive devices Slide 23
Games
Surgery
Tele-presence
Conclusion
The next important step towards realistically simulated environments that have been envisioned by science fiction
authors and futurists alike.
Large potential for applications in critical fields as well as for leisurely pleasures.
Haptic devices must be miniaturized so that they are lighter, simpler and
