Difference between revisions of "Electromagnetic tracking"
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| − | '''Electromagnetic tracking''' is a kind of [[3D tracking]] that generates magnetic fields and detects them from a sensor. It is a technology for [[6DOF tracking]]. It can be implemented in an [[electromagnetic tracking system]]. Examples of electromagnetic tracking are the [[Magic Leap 1 controller]] and the [[Razer Hydra]]. | + | [[File:Polhemus Viper TX2.jpg|thumb|A Viper TX2 electromagnetic coil source]] |
| + | '''Electromagnetic tracking''' is a kind of [[3D tracking]] that generates magnetic fields and detects them from a sensor. It is a technology for [[6DOF tracking]]. It can be implemented in an [[electromagnetic tracking system]]. Examples of electromagnetic tracking are the [[Magic Leap 1 controller]] and the [[Razer Hydra]]. The [[Magic Leap 1]] uses magnetic tracking for its handheld controller, but in a poor form. | ||
It can work with a headset if the headset is small enough. | It can work with a headset if the headset is small enough. | ||
| − | Magnetic tracking preserves high frequency transients in movement, like a flick of a finger. | + | Magnetic tracking preserves high frequency transients in movement, like a flick of a finger. However, there must not be any metal objects in the tracking area; A metal object has to be at least a foot or two away from a tracking area so that it doesn't interfere with the tracking measurements. Metal objects cause jitter and drift. |
| + | __NOTOC__ | ||
| + | ==Companies== | ||
| + | Electromagnetic tracking was invented by [[Polhemus]], which originally was researching navigation in aircraft. Another company that has made electromagnetic tracking gadgets is [[Ascension Technologies]]. | ||
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* [[Polhemus]]<ref name="c061">{{cite web | last=Data | first=Stats N | title=Electromagnetic Tracking System Market | website=Empowering Insights | url=https://www.statsndata.org/report/Electromagnetic-Tracking-System-Market-191994 | access-date=2024-05-31}}</ref> | * [[Polhemus]]<ref name="c061">{{cite web | last=Data | first=Stats N | title=Electromagnetic Tracking System Market | website=Empowering Insights | url=https://www.statsndata.org/report/Electromagnetic-Tracking-System-Market-191994 | access-date=2024-05-31}}</ref> | ||
* [[NDI]] (previously called Ascension)<ref name="c061"/> | * [[NDI]] (previously called Ascension)<ref name="c061"/> | ||
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* [[Radwave Technologies]]<ref name="c061"/> | * [[Radwave Technologies]]<ref name="c061"/> | ||
* [[Sixense]] | * [[Sixense]] | ||
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| + | '''Premo''' is a company in Spain that markets electromagnetic tracking parts, including coils.<ref name="g964">{{cite web | title=VR/AR EM Motion Tracking Components | website=Grupo Premo | url=https://www.grupopremo.com/en/611-vrar-em-motion-tracking-components | access-date=2024-05-31}}</ref> Premo's electromagnets are in some [[AmfiTrack]] products.<ref name="q562">{{cite web | title=Gen 2 EM Motion tracking System VR Demo Kit | website=Resources Center | date=2019-11-14 | url=https://www.grupopremo.com/resources-center/247-the-revolution-in-the-positioning-and-tracking-system-with-6-degrees-of-freedom/ | access-date=2024-05-31}}</ref> | ||
== Types == | == Types == | ||
* [[AC magnetic tracking]] (Polhemus) | * [[AC magnetic tracking]] (Polhemus) | ||
* pulsed DC magnetic tracking (Used by Ascension, later NDI) | * pulsed DC magnetic tracking (Used by Ascension, later NDI) | ||
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| + | ==Components== | ||
| + | '''SEU''' stands for system electronics unit. It is used in the context of [[electromagnetic tracking system]]s such as the [[Polhemus Viper]] and the [[Polhemus Patriot]]. It is a box that the sources and sensors plug into. | ||
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| + | ==Industry Standard Coil Architecture== | ||
| + | [[File:EM tracker coil.png|thumb|An ISCA coil]] | ||
| + | '''Industry Standard Coil Architecture''' is the use of three colocated orthogonal quasi-dipole transmitter coils and three colocated quasi-dipole receiver coils.<ref name="f611">{{cite web | title=System and method for electromagnetic tracking operable with multiple coil architectures | website=Google Patents | date=2003-09-24 | url=https://patents.google.com/patent/US8354837B2 | access-date=2024-08-22}}</ref> | ||
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| + | Examples of this type of system are: | ||
| + | * [[Polhemus Viper]] | ||
| + | * [[Polhemus Fastrak]] | ||
| + | * [[Polhemus Patriot]] | ||
==References== | ==References== | ||
{{Reflist}} | {{Reflist}} | ||
| − | [[Category: | + | [[Category:Position and orientation tracking]] |
[[Category:Electromagnetic tracking]] | [[Category:Electromagnetic tracking]] | ||
Latest revision as of 07:26, 22 February 2025
Electromagnetic tracking is a kind of 3D tracking that generates magnetic fields and detects them from a sensor. It is a technology for 6DOF tracking. It can be implemented in an electromagnetic tracking system. Examples of electromagnetic tracking are the Magic Leap 1 controller and the Razer Hydra. The Magic Leap 1 uses magnetic tracking for its handheld controller, but in a poor form.
It can work with a headset if the headset is small enough.
Magnetic tracking preserves high frequency transients in movement, like a flick of a finger. However, there must not be any metal objects in the tracking area; A metal object has to be at least a foot or two away from a tracking area so that it doesn't interfere with the tracking measurements. Metal objects cause jitter and drift.
Companies[edit]
Electromagnetic tracking was invented by Polhemus, which originally was researching navigation in aircraft. Another company that has made electromagnetic tracking gadgets is Ascension Technologies.
Premo is a company in Spain that markets electromagnetic tracking parts, including coils.[2] Premo's electromagnets are in some AmfiTrack products.[3]
Types[edit]
- AC magnetic tracking (Polhemus)
- pulsed DC magnetic tracking (Used by Ascension, later NDI)
Components[edit]
SEU stands for system electronics unit. It is used in the context of electromagnetic tracking systems such as the Polhemus Viper and the Polhemus Patriot. It is a box that the sources and sensors plug into.
Industry Standard Coil Architecture[edit]
Industry Standard Coil Architecture is the use of three colocated orthogonal quasi-dipole transmitter coils and three colocated quasi-dipole receiver coils.[4]
Examples of this type of system are:
References[edit]
- ↑ Jump up to: 1.0 1.1 1.2 1.3 Data, Stats N. "Electromagnetic Tracking System Market". https://www.statsndata.org/report/Electromagnetic-Tracking-System-Market-191994.
- ↑ "VR/AR EM Motion Tracking Components". https://www.grupopremo.com/en/611-vrar-em-motion-tracking-components.
- ↑ "Gen 2 EM Motion tracking System VR Demo Kit". 2019-11-14. https://www.grupopremo.com/resources-center/247-the-revolution-in-the-positioning-and-tracking-system-with-6-degrees-of-freedom/.
- ↑ "System and method for electromagnetic tracking operable with multiple coil architectures". 2003-09-24. https://patents.google.com/patent/US8354837B2.