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Human Computer Interactions 2 (Ryan McMahan) > Advanced System Interfaces > Flashcards

Advanced System Interfaces Flashcards

1
Q

Define: Advanced System Interface

A

A UI that uses complex technologies to simulate or

replace real-world stimuli and interactions

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2
Q

Define: Tracking Device

A

An input device that provides information about the

user or a physical object’s location in 3D space

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3
Q

T/F Tracking devices are usually active

A

F, passive

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4
Q

List common tracking devices

A

camera, accelerometer, gyroscope, GPS, Magnotometer

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5
Q

Define: Accelerometer

A

An electromechanical device that measures acceleration

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6
Q

T/F Acceleration alone is a good predictor of position

A

F

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7
Q

T/F Accelerometers are usually 3-axis-based

A

T

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8
Q

Define: Gyroscope

A

An electromechanical device that measures orientation

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9
Q

T/F Gyroscopes are usually 4-axis-based

A

F, 3 axis

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10
Q

T/F Gyroscopes are susceptible to drift

A

T

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11
Q

T/F Gyroscopes are never combined with accelerometers

A

F, they often are

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12
Q

Define: Magnetometer

A

An electromechanical device that reports the

strength and direction of the strongest magnetic field

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13
Q

T/F Magnetometers are often used as compasses

A

T

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14
Q

T/F Magnetometers are also used to reduce

drift for gyroscopes

A

T

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15
Q

T/F Magnetometers are never used for tracking positions

A

F, sometimes they are

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16
Q

Define: GPS

A

A satellite-based tracking system based on

unobstructed line of sight to four or more satellites

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17
Q

T/F Regular units are as inaccurate as 3.5 meters

A

F, 7.8 meters for regular units

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18
Q

Define: Camera

A

An optical sensor that captures reflected light

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19
Q

T/F Camera systems rely heavily on computer vision

techniques and algorithms

A

T

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20
Q

Define: Sensing device

A

An input device that provides electrical signals

converted from physical properties or directly captured

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21
Q

T/F Sensing devices do not rely on signal processing techniques or algorithms

A

F

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22
Q

Define: Microphone

A

A transducer that converts sound into a signal

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23
Q

Define: Force sensor

A

A transducer that converts applied force into a signal

24
Q

Define: EMG (Electromyography)

A

Captures electrical signals produced by a muscle

25
Q

Define: EEG (Electroencephalography)

A

Captures electrical signals produced by the brain

26
Q

Define: EKG (Electrocardiography)

A

Captures electrical signals produced by the heart

27
Q

Define: GSR (Galvanic Skin Response)

A

Captures electrical signals produced by the skin

28
Q

What are some things output devices are used for in advanced system interfaces?

A

3D visual stimuli, 3D auditory stimuli, Haptics, Olfactory stimuli

29
Q

Define: Visual Display

A

An output device that provides visuals

30
Q

Advanced visual displays usually support ____ and ____

A

Stereopsis, Motion Paralax

31
Q

Define: Stereopsis

A

The fusion of the two perspectives seen by the eyes, which are caused by binocular disparity

32
Q

Define: Motion Parallax

A

Closer objects appear to move faster than objects farther away when moving one’s head

33
Q

Define: Stereoscopy

A

The display of different perspectives to each eye

34
Q

What are the three types of stereoscopy?

A

Active, Passive, Autostereoscopic

35
Q

Define: Head-Based Rendering (HBR)

A

The display of new perspective based on the user’s

current head position

36
Q

What are the three types of head based rendering?

A

Orientation-based, Position-based, Total

37
Q

Define: Auditory Display

A

An output device that provides sounds

38
Q

What are two common types of auditory displays?

A

external speakers, headphones

39
Q

Define: Haptic Display

A

An output device that provides force feedback or

touch sensations

40
Q

Define: Olfactory Display

A

An output device that provides scents

41
Q

Define: Virtual Reality

A

A 3D computer-generated world seen from a
first-person point of view that is under the real-time
control of the user

42
Q

Define: Head-Mounted Display (HMD)

A

A visual display worn on the head that provides

graphics in front of one or both eyes

43
Q

What is FOR

A

Field of Regard

44
Q

List three common types of head-mounted displays

A

Orientation-only, Total Head Tracking, Walking

45
Q

Define: CAVE (Cave Automatic Virtual Environment)

A

A room-sized environment in which projectors display

computer graphics on multiple walls

46
Q

Define: Simulator (Sim)

A

A device that artificially recreates a specific experience

or task and the environment in which it takes place

47
Q

List three common types of simulators

A

vehicle, walking, task

48
Q

Define: Vehicle Simulator

A

A simulator that recreates the experience of operating

a vehicle

49
Q

List three common types of vehicle simulators

A

Flight, racing, mining

50
Q

Define: Walking simulator

A

A simulator that recreates the experience of walking

in an environment

51
Q

List four types of walking simulators

A

Belt, roller, sphere, frictionless

52
Q

Define: Task simulator

A

A simulator that recreates the experience of

completing a task

53
Q

What three fields are task simulators primarily used in?

A

Medicine, military, mining

54
Q

Define: Augmented Reality

A

A real-world environment that is enhanced

(augmented) with virtual objects or information

55
Q

Define: Large Interactive Display (LID)

A

A large visual display system that affords natural

interactions

56
Q

What are two common types of large interactive displays?

A

Powerwall, Tabletop

57
Q

Define: Gestural Interface (GI)

A

A UI that uses gestures to interact with the system

Human Computer Interactions 2 (Ryan McMahan) (6 decks)

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