Advanced System Interfaces Flashcards
Define: Advanced System Interface
A UI that uses complex technologies to simulate or
replace real-world stimuli and interactions
Define: Tracking Device
An input device that provides information about the
user or a physical object’s location in 3D space
T/F Tracking devices are usually active
F, passive
List common tracking devices
camera, accelerometer, gyroscope, GPS, Magnotometer
Define: Accelerometer
An electromechanical device that measures acceleration
T/F Acceleration alone is a good predictor of position
F
T/F Accelerometers are usually 3-axis-based
T
Define: Gyroscope
An electromechanical device that measures orientation
T/F Gyroscopes are usually 4-axis-based
F, 3 axis
T/F Gyroscopes are susceptible to drift
T
T/F Gyroscopes are never combined with accelerometers
F, they often are
Define: Magnetometer
An electromechanical device that reports the
strength and direction of the strongest magnetic field
T/F Magnetometers are often used as compasses
T
T/F Magnetometers are also used to reduce
drift for gyroscopes
T
T/F Magnetometers are never used for tracking positions
F, sometimes they are
Define: GPS
A satellite-based tracking system based on
unobstructed line of sight to four or more satellites
T/F Regular units are as inaccurate as 3.5 meters
F, 7.8 meters for regular units
Define: Camera
An optical sensor that captures reflected light
T/F Camera systems rely heavily on computer vision
techniques and algorithms
T
Define: Sensing device
An input device that provides electrical signals
converted from physical properties or directly captured
T/F Sensing devices do not rely on signal processing techniques or algorithms
F
Define: Microphone
A transducer that converts sound into a signal
Define: Force sensor
A transducer that converts applied force into a signal
Define: EMG (Electromyography)
Captures electrical signals produced by a muscle
Define: EEG (Electroencephalography)
Captures electrical signals produced by the brain
Define: EKG (Electrocardiography)
Captures electrical signals produced by the heart
Define: GSR (Galvanic Skin Response)
Captures electrical signals produced by the skin
What are some things output devices are used for in advanced system interfaces?
3D visual stimuli, 3D auditory stimuli, Haptics, Olfactory stimuli
Define: Visual Display
An output device that provides visuals
Advanced visual displays usually support ____ and ____
Stereopsis, Motion Paralax
Define: Stereopsis
The fusion of the two perspectives seen by the eyes, which are caused by binocular disparity
Define: Motion Parallax
Closer objects appear to move faster than objects farther away when moving one’s head
Define: Stereoscopy
The display of different perspectives to each eye
What are the three types of stereoscopy?
Active, Passive, Autostereoscopic
Define: Head-Based Rendering (HBR)
The display of new perspective based on the user’s
current head position
What are the three types of head based rendering?
Orientation-based, Position-based, Total
Define: Auditory Display
An output device that provides sounds
What are two common types of auditory displays?
external speakers, headphones
Define: Haptic Display
An output device that provides force feedback or
touch sensations
Define: Olfactory Display
An output device that provides scents
Define: Virtual Reality
A 3D computer-generated world seen from a
first-person point of view that is under the real-time
control of the user
Define: Head-Mounted Display (HMD)
A visual display worn on the head that provides
graphics in front of one or both eyes
What is FOR
Field of Regard
List three common types of head-mounted displays
Orientation-only, Total Head Tracking, Walking
Define: CAVE (Cave Automatic Virtual Environment)
A room-sized environment in which projectors display
computer graphics on multiple walls
Define: Simulator (Sim)
A device that artificially recreates a specific experience
or task and the environment in which it takes place
List three common types of simulators
vehicle, walking, task
Define: Vehicle Simulator
A simulator that recreates the experience of operating
a vehicle
List three common types of vehicle simulators
Flight, racing, mining
Define: Walking simulator
A simulator that recreates the experience of walking
in an environment
List four types of walking simulators
Belt, roller, sphere, frictionless
Define: Task simulator
A simulator that recreates the experience of
completing a task
What three fields are task simulators primarily used in?
Medicine, military, mining
Define: Augmented Reality
A real-world environment that is enhanced
(augmented) with virtual objects or information
Define: Large Interactive Display (LID)
A large visual display system that affords natural
interactions
What are two common types of large interactive displays?
Powerwall, Tabletop
Define: Gestural Interface (GI)
A UI that uses gestures to interact with the system
