Taxonomy of the input devices
Palmtop Display for Dextrous
Manipulation (PDDM)
Background
…new communication scheme
Approach: new communication methods based on human communication
processes
People communicate with voice, gesture, facial and other bodily
expressions, background images and sound are exploited
Telephone only transmits voice
Telephone conference transmit only voice and 2D images
…exploring basic technologies for both realistic multimedia
communications and hyper-realistic communications
…that facilitate mutual understanding beyond
differences in place, time, language and culture!!!
VR interfaces should be good at balancing both
(a) observing from a suitable viewpoint (output)
(b) controlling and transform the objects that are focused on (input)
PDDMdesigned especially for fine manipulating tasks
in the virtual space teleconferencing system
VSTC
… combines an operation input method and an information output method
!!! allows user to be unaware of mode shifts
no interruption of the phase flow in manipulation
Conception of the PDDM system
The PDDM with the virtual space
teleconferencing system (VSTC)
Configuration of the trial system
Initial
situation
Fixed view in
background (FVB)
Semi Fixed View in
an Object (SFVO)
Camera
Centred
Magic Hand
(CCMH)
Object
Centred
Magic Hand
(OCMH)
2-4
Magnetic Levitation
Device Cabinet
Hand Operation of Magnetic
Levitation Haptic Device
Inner hemisphere
MagLev Wrist
Sensor and
magnet assembly
Design
Outer shell
WYSIWYF Display
“What you see is what you feel”
Visual/haptic interface to
virtual environment
- skill training
Virtual tennis
the ball is a virtual image
but the racket is a real image
user can interact with a virtual
environment not only with
his/her own hand but also with
other real tools
…medical
application @
Cybernet
Systems
Corporation
6 DOF hand controller
Eye surgery simulator
Researchers at the Medical College of Georgia
and IMTC at Georgia Tech created a device
incorporating virtual reality to simulate the
look and feel of eye surgery.
A primary benefit of the simulator is to provide
an environment for recursive and time-critical
training for medical students and practicing
surgeons.
interaction with a 3D
virtual eye
force feedback system
“slave arm: knife”
Impulse Engine
2000
MIT – Phantom
device
…in six degrees of
freedom
provides high-fidelity
3D force-feedback
the ability to operate in an
office/desktop environment
compatibility with standard
PCs and UNIX workstations
• monitor enables users to see computer generated images
• audio speakers allow the users to hear synthesized sounds
• the PHANTOM device makes it possible for users to touch and
manipulate virtual objects
4 DOF haptic display
an interface in virtual
environments and teleoperators
astronaut training
simulate the mechanical behaviour
of a wide range of tools in a zero
gravity environment
expanding and contracting the
variable length linkage will rotate
the handle about the axis of the
linkage resulting in the degrees of
freedom
differential transmission