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gloves
and goggles
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The definition of a data glove is a glove equipped with sensors that sense the movements of the hand and interfaces those movements with a computer. Data gloves are commonly used in virtual reality environments where the user sees an image of the data glove and can manipulate the movements of the virtual environment using the glove.
The word Hapic relates
to the data glove and has a definition of the science of applying tactile
sensation to human interaction with computers. A haptic device is one
that involves physical contact between the computer and the user, usually
through an input/output device, such as a joystick or data gloves, that
senses the body's movements. By using haptic devices, the user can not
only feed information to the computer but can receive information from
the computer in the form of a felt sensation on some part of the body.
This is referred to as a haptic interface. For example, in a virtual reality
environment, a user can pick up a virtual tennis ball using a data glove.
The computer senses the movement and moves the virtual ball on the display.
However, because of the nature of a haptic interface, the user will feel
the tennis ball in his hand through tactile sensations that the computer
sends through the data glove, mimicking the feel of the tennis ball in
the user's hand. (1)
The definition of
Goggles is Head Mounted Display (HMD) the objects in the immediate visual
range are simulated and it requires two small screens the CRT, and Active
Matrix. A typical screen has
is about .7" with 120,000 pixels in total, arranged in a "delta"
pattern--one each for the red, green and blue components. The apparent
resolution of the screen is some 40,000 pixels, or 200x200.
Image warping/depixelizing
This is usually done with optics rather than digitally transforming the
image. Increases the apparent resolution of the screens. We can get away
with this because only the objects that we are focusing on are clear--perhiperal
areas are rendered in very low resolution.(2)
Sources
http://webopedia.lycos.com/TERM/v/virtual.html
http://ksi.cpsc.ucalgary.ca/courses/547-95/pauls/vr.html
Dawn Pacheco
4/09/02
MCCNM 336