3.03B Common Types and Interface Devices and Systems of Virtual Reality

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3.03B Common Types and Interface Devices and
Systems of Virtual Reality

• 3.03 Explore virtual reality design and use.

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Types of Virtual Realities
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Types of Virtual Realities

• Desktop
• 3-D Illustrators
• Does not require additional equipment.
• Immersion
• Requires additional equipment.
• Is the most effective of Virtual Reality
  technologies.
• Eyes, ears, or other body senses are isolated
  from real environment and fed information that is
  generated by the computer.
• Telepresence
• This technique is used in the movie industry to
  create animations by using body sensors to record
  human motions and transfer them to animated
  subjects.

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Common Interface Devices
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Interface Devices
Head-mounted display (HMD) Facial sensor/body
suit
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Interface Devices
Wand
Data glove
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Head-Mounted Display (HMD)

• Device on top of helmet signals head movements.
• A computer continually updates the simulation to
  reflect new perspectives.
• Its viewing screen adds depth to flat pictures.

• Blocks out surrounding environment.
• Is popular with the entertainment industry.

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• Data Glove
• Programs the computer to change modes in response
  to gestures made with data gloves.
• Some use fiber optic cables.
• Some use strain sensors over joints.
• Facial sensor/body suit
• Sensors read facial expressions/body movements
  and transfer information to animations.

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Wand

• Is simplest of interface devices.
• Most have on/off buttons.
• Some have knobs, dials, or joy sticks.
• Biologists use wands like scalpels to slice
  tissue samples from virtual brains.
• Wands operate with six degrees of freedom.
• By pointing a wand at an object, its position and
  orientation can be changed in any of six
  directions ? forward or backward, up or down, or
  left or right

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Interface Systems
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Interface Systems

• Three common systems
• HMD Head-mounted Display
• BOOM Binocular Omni Orientation Monitor
• CAVE Automatic Virtual Environment

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BOOM (Binocular Omni Orientation Monitor)

• Is similar to HMD but no helmet.
• Viewing box suspended from rotating arm.
• Uses handles on box sides to move image around.
• Buttons on handles allow user to interact with
  object.
• Can also hook up data gloves.

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CAVE

• One of the newest, most "immersive" virtual
  environments.
• 10 x 10 x 9-foot darkened cubicle.
• Is like climbing into the computers screen.
• Display enables user to experience the. sensation
  of being "inside" the data.

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Advantages of CAVE

• Only need special glasses and wand instead of
  clunky equipment.
• Has a large field of view of data that is
  projected in stereoscopic images onto the walls
  and floor of the CAVE.
• Multiple users can be in CAVE at same time.
• Sound can be added to images.

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Shared Virtual Environments

• In this illustration, three networked users at
  different locations (anywhere in the world) meet
  in the same virtual world by using a BOOM device,
  a CAVE system, and a Head-mounted Display.
• All users see the same virtual environment from
  their respective points of view.
• Each user is presented as a virtual human
  (avatar) to the other participants.

• The users can see each other, communicate with
  each other, and interact with the virtual world
  as a team.

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Review

• Common virtual reality
• Types
• Interface devices
• Interface systems