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COMPUTER

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Anupam Alur

on 25 March 2014

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Transcript of COMPUTER

COMPUTER HAPTICS
The word haptic originates from the Greek
verb hapto—to touch

The haptic experience is based on tactile senses,which provide information about body pose and movement.

Its bidirectional nature is the most prominent feature of haptic interaction.

It enables exchange of information between the body and the outside world.
WHAT IS HAPTICS???
HAPTIC HISTORY
1930’s to 1940’s


Scientists and Psycho-physicists carried out research.

The word haptics was introduced that addressed human touch-based perception and manipulation.
1970’s to 1980’s



Significant research efforts in the field of robotics

focus on manipulation and perception by touch.

Two communities emerged,
1)sought to understand the human hand and 2)aspired to create devices which could understand sensory design
1990's
In the early 1990's ,a new usage of the word haptics began to emerge.

Computer haptics possible.

Computer haptics enables the display of simulated objects to humans in an interactive manner.
HOW HAPTICS WORKS?
MUSCLES
END EFFECTOR
SKIN SURFACE
BRAIN
SENSORS
COMPUTERS
ACTUATORS
MOTION
It is a device or mechanism that puts something
into automatic action
MOTOR
COMMANDS
POSITION INFORMATION
TORQUE COMMANDS
FORCE
TACTILE AND
KINESTHETIC
INFORMATION
CONTACT FORCES
Haptic devices are mechanical devices that mediate communication between the user and the computer.

Haptic devices allow users to touch, feel and manipulate three-dimensional objects.

Only input--unidirectional devices-- basic mice and joysticks-- provide no manual feedback.--information flows in only one direction, from the peripheral to the computer.

Input-output devices--consumer peripheral devices equipped with special motors and sensors -- force feedback joysticks and steering , PHANTOM device.
THE PHANTOM DEVICE
The Geomagic Touch (formerly Sensable Phantom Omni) is the industry’s most widely deployed professional haptic device.

It is a motorized device that applies force feedback on the user’s hand.

Allows the user to feel virtual objects

Produces true-to-life touch sensations as user manipulates on-screen 3D objects.
THE HAPTI-MEMO GAME
HaptiMemo Game is a haptic-based memory game developed as part of the Android Application.

Purpose : is to evaluate the effect of adding haptic feedback feature to the traditional memory game.

This addition will enhance the player’s memory ability to find matching items.

It will enhance the player’s knowledge and experience regarding the haptic feedback by presenting different types of haptic feedback or “vibrations “with the same frequency level.


HAPTI-MEMO GAME
HAPTIC DEVICES
VIRTUAL REALITY


Virtual Reality (VR) applications strive to simulate real or imaginary scenes with which a user can interact and perceive the effects of his/her actions in real time.

VR applications rely on a smaller subset of senses, typically vision, hearing, and more recently, touch.

• The simulation engine

• Visual, auditory and haptic rendering algorithms

• Transducers

• The human operator

• Bidirectionality, often referred to as the single most important feature of the haptic interaction modality.

ENVIRONMENTS
VIRTUAL ENVIRONMENTS
It is an immersive virtual reality that is simulated by a computer and primarily involves Audio visual experiences.

A virtual environment is mainly concerned with defining interactive and virtual image displays.


Allow multiple users, each with his/her own haptic interface, to collaboratively and/or remotely manipulate shared objects in a virtual or real environment.

process of applying forces to the user through a force-feedback device.

Haptic rendering used to enable a user to touch, feel and manipulate virtual objects and enhance a user’s experience in virtual environment.
Collaborative haptic audio
visual environment
APPLICATIONS OF HAPTICS
GRAPHICAL USER INTERFACES:
Video Games

Nokia phone designers have perfected a tactile touch screen that makes on-screen buttons behave as if they were real buttons.
GROUND VEHICLE
SIMULATORS
Simulators facilitate complex training missions involving multiple participants acting in various roles.

Include three computer monitors and a pair of joystick controllers attached to a console.

Can simulate several different ground vehicles, including non-line-of sight mortar vehicles,reconnaissance vehicles or an infantry carrier vehicle.
TELEROBOTICS
Human operator controls the movements of robot that is located some distance away.

Some tele-operated robots are limited to very simple tasks, such as aiming a camera and sending back visual images.

Tele-presence : the human operator has a sense of being located in the robot's environment.

eg : Mars Exploration Rover
Most blind computer users have access to text via braille, but not to the graphics.

Haptics interfaces use the sense of touch in the user interaction.

With a haptic interface it is thus possible to feel shapes that are based on digital information.

Haptics can also be used in basic GUI design
HELPING THE BLIND
AN INTERESTING
FEELING A CITY
Computer scientists in Greece are incorporating haptic technology into touchable maps for the blind.

To create a map, researchers shoot video of a real-world location, either an architectural model of a building or a city block.

Software evaluates the video frame by frame to determine the shape and location of every object.

The data results in a three-dimensional grid of force fields for each structure.

Using a haptic interface device, a blind person can feel these forces and, along with audio cues, get a much better feel of a city's or building's layout.
MEDICINE
GENERAL USE
Medicine has an old relation with touch.

There is a shift to durable and reliable touch screen and touch panel interfaces.

Highly computerized robotic surgery systems and the innovation of wearable patient medical devices : create opportunities to enhance the user interface with tactile feedback.

Immersion's Touch Sense haptic feedback solutions offer critical benefits in the medical space, including:
• Tactile Knowledge
• Enhancing Performance .

MEDICAL DEVICES
Improve confidence by providing immediate feedback via haptics alerts and force feedback to help guide the procedure

Reduces errors by reinstating the sense of touch.

Users get immediate confirmation that their touch is being recognized by the touch screens and touch panel device.

Haptic alerts : ensure the user receives urgent information when sight and sound are limited or unreliable forms of communication.

H
A
P
T
I
C
S
AGENDA
What is Haptics?
Haptic History
How Haptics Works
Haptic Devices
Hapti Memo Game
Virtual Reality
Environments
Applications of Haptics
Conclusion
References
REFERENCES

1) Amani Albraikan1,2, Hawazin Badawi1,3 , Abdelwahab Hamam1 and Abdulmotaleb El Saddik- “HAPTIBASIC: LEARNING BASIC CONCEPTS OF A HAPTIC TECHNOLOGY THROUGH EDUTAINMENT GAMES”
-Presented at the “Main Conference Sessions-2013 IEEE International Conferences” ,
held from the 15-19th July,San Jose CA.
2) www.howstuffworks.com
3) www.slideshare.com
4) www.wikipedia.com
5) www.geomagic.com
6) www.webopedia.com


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