IVR Chapter 7 Motion tracking
Questions about the lecture 'Introduction to Virtual Reality' of the RWTH Aachen Chapter 7 Motion tracking
Questions about the lecture 'Introduction to Virtual Reality' of the RWTH Aachen Chapter 7 Motion tracking
Kartei Details
| Karten | 21 |
|---|---|
| Sprache | English |
| Kategorie | Informatik |
| Stufe | Universität |
| Erstellt / Aktualisiert | 03.02.2017 / 09.02.2017 |
| Lizenzierung | Keine Angabe |
| Weblink |
https://card2brain.ch/box/20170203_introduction_to_virtual_reality_chapter_7_motion_tracking
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| Einbinden |
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What did Steve Bryson said?
[motion tracking]
“If I turn my head and nothing happens, it ain’t VR!”
What are the general criteria?
[motion tracking, 6]
1. Measures as position, orientation, angle, acceleration, distances
2. Dimensions // 3D for VR
3. Number of tracked segments
4. Data handling automatically or manually and in real time or not
5. Size of interaction volume (tradoff)
6. Ergonomics (intrusive or not)
What are the spatial criteria?
[motion tracking, 2]
1. Spatial accuracy (Grasping vs walking) // Hit around middle
2. Spatial precision // Hit exact anywhere
What are the temporal criteria?
[motion tracking, 2]
1. Temporal accuracy (Response time, latency, sample rate)
2. Temporal precision (Jitter)
What are the technologies?
motion tracking, 7]
1. Mechanical with the ultimate displayed
2. Electromagnetic
3. Instrumented gloves
4. Ultra sound
5. Intersense
6. Light
7. Satellite with global positioning system (GPS)
What are electromagnetic examples?
[technologies.motion tracking, 3]
1. Polhemus
2. Ascension
3. Used in military
What are the characteristics of electromagnetic?
[technologies.motion tracking, 5]
1. Good position and orientation
2. Sensitive to ferromagnetic materials in the environment
3. Accuracy decreases with growing distance
4. Large sensors (1-2cm)
5. Cabling
What are the tasks for instrumented gloves?
[technologies.motion tracking, 2]
1. Measures angles between finger segments
2. Difficult to measure thumb rotation for precision grip
