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Submitted By:Surabhi SadhwaniCSE-B226th Sem0905cs091120

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OUTLINE Definition

Introduction

Technology Working

Haptic devices

Applications

Advantages & Disadvantages

Conclusion

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What Is Haptics?

Haptics is derived from the Greek word haptikos

which means being able to come into contact.

Haptics is the science of applying touch (tactile)sensation and control to interact with computer

applications.

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Virtual Reality

Virtual reality is a form of human-computer interaction

providing a virtual environment that one can explorethrough direct interaction with our senses.

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The Real World User should be able to touch the virtual object and feel

a response from it.

In order to complete the imitation of the real worldone should be able to interact with the environmentand get a feedback.

This feedback is called Haptic Feedback.

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Haptics Technology Haptic technologyis a tactile feedback technology

which takes advantage of the sense of touch by applying

forces, vibrations, or motions to the user.A haptic device gives people a sense of touch with

computer-generated environments, so that when virtualobjects are touched, they seem real and tangible.

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Haptics Feedback Haptics is implemented through different type of

interactions with a haptic device communicating withthe computer. These interactions can be categorizedinto the different types of touch sensations a user canreceive:

1)Tactile Feedback

2)Force Feedback

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Tactile Feedback

Refers to the sensations felt by the skin.

It allows the user to feel things such as the texture ofsurfaces, temperature and vibration.

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Force Feedback

It reproduces the directional forces that can result

from solid boundaries. E.g. the weight of virtual objects, inertia, etc.

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Design of Haptic System Haptics are enabled by

actuators that apply forces tothe skin for touch feedback.

Haptic feedback useelectromagnetic technologiessuch as vibratory motors,

like a vibrating alert in a cellphone or a voice coil in aspeaker, where a central massis moved by an appliedmagnetic field.

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How it Works ?

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Design of Haptic System The actual process used by the

software to perform itscalculations is called haptic

rendering.A commonrendering method usespolyhedral models to representobjects in the virtual world.

The job of conveying hapticimages to the user falls to theinterface device.

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How are Haptic Devices Different? Common interface devices like mouse and joystick are

only input devices. No feedback.

Haptic devices are input-output devices.

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Areas of Haptics Computer Haptics- It helps to enable a user to feel

something happening in the computer's mind througha typical interface.

Human Haptics- It tells ushow humans and livingbeings experience touch.

Machine Haptic- It tells us how mechanical devicestouch and feel their environment

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Applications of Haptics Technology Computer and video

games-Haptic feedback iscommonly used in arcadegames, especially racingvideo games.

Mobile devices-Tactilehaptic feedback isbecoming common incellular devices.

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Applications of Haptics Technology Personal computers-

Apple's MacBook andMacBook Pro startedincorporating a "TactileTouchpad" design.

Virtual reality-Haptics aregaining widespreadacceptance as a key part ofvirtual reality systems.

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Applications Of Haptics Technology Medicine-Haptic

interfaces for medicalsimulation may proveespecially useful fortraining in minimallyinvasive procedures suchas laparoscopy and

interventional radiologyas well as for performingremote surgery

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REMOVAL OF LENS SEGMENT

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Applications of Haptics Technology Robotics-Haptic

technology is also widelyused in teleoperation, ortelerobotics.

Arts and design-Haptics is

used in virtual arts, such assound synthesis or graphicdesign and animation

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Disadvantages

Expensive

Haptic interfaces can only exert forces with limitedmagnitude and not equally well in all directions

Haptic device position sensors have finite resolution.

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CONCLUSION The next important step towards realistically

simulated environments that have been envisioned byscience fiction authors and futurists alike.

Large potential for applications in critical fields aswell as for leisurely pleasures.

Haptic devices must be miniaturized so that they are

lighter, simpler and easier to use.

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