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
