Constellation - Revision history

Neo222 at 22:09, 24 July 2017

2017-07-24T22:09:11Z

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			{{see also\|tracking systems}}
	==Introduction==		==Introduction==
	[[Constellation]] is a optical-based [[outside-in tracking\|outside-in]] [[positional tracking]] system developed by [[Oculus VR]] for the [[Oculus Rift (Platform)\|Oculus Rift]] [[Oculus Rift#Devices\|devices]]. Similar to [[Lighthouse]], Constellation is able to track both the [[HMD]] and [[Oculus Touch]] controllers. Unlike Lighthouse, Constellation utilizes [[optical sensor]]s that detect the IR LED markers on the tracked devices. It features 360 degrees tracking and is suitable for both seated and standing [[VR]] experiences.		[[Constellation]] is a optical-based [[outside-in tracking\|outside-in]] [[positional tracking]] system developed by [[Oculus VR]] for the [[Oculus Rift (Platform)\|Oculus Rift]] [[Oculus Rift#Devices\|devices]]. Similar to [[Lighthouse]], Constellation is able to track both the [[HMD]] and [[Oculus Touch]] controllers. Unlike Lighthouse, Constellation utilizes [[optical sensor]]s that detect the IR LED markers on the tracked devices. It features 360 degrees tracking and is suitable for both seated and standing [[VR]] experiences.

Neo222: Text replacement - "external camera sensor" to "Oculus Sensor"

2016-12-17T15:23:56Z

Text replacement - "external camera sensor" to "Oculus Sensor"

← Older revision		Revision as of 15:23, 17 December 2016
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	[[File:oculus rift cv1 tracking volume1.png\|300px\|thumb\|[[Tracking volume]]: 100°H x 70°V (>18 feet range)<br>Room size: 15 feet by 15 feet]] [[File:oculus rift cv1 tracking volume2.png\|300px\|thumb\|[[Tracking volume]]: 100°H x 70°V (>18 feet range)<br>Room size: 15 feet by 15 feet]]		[[File:oculus rift cv1 tracking volume1.png\|300px\|thumb\|[[Tracking volume]]: 100°H x 70°V (>18 feet range)<br>Room size: 15 feet by 15 feet]] [[File:oculus rift cv1 tracking volume2.png\|300px\|thumb\|[[Tracking volume]]: 100°H x 70°V (>18 feet range)<br>Room size: 15 feet by 15 feet]]
	{{see also\|Oculus Rift CV1}}		{{see also\|Oculus Rift CV1}}
	The first iteration of the system will be released with [[Oculus Rift CV1]] in Q1 2015. The [[Rift]] will utilize an [[~~external camera sensor~~]] that sits on top of a thin and malleable pole about a foot in length. The entire setup can be placed on a desk similar to a lamp. The sensor and its mount is black in color. It is small, sleek and looks like a small desk lamp.		The first iteration of the system will be released with [[Oculus Rift CV1]] in Q1 2015. The [[Rift]] will utilize an [[Oculus Sensor]] that sits on top of a thin and malleable pole about a foot in length. The entire setup can be placed on a desk similar to a lamp. The sensor and its mount is black in color. It is small, sleek and looks like a small desk lamp.

	IR LED markers are placed on the HMD and Oculus Touch controllers so they can be tracked by the sensor(s).		IR LED markers are placed on the HMD and Oculus Touch controllers so they can be tracked by the sensor(s).
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	For Constellation, high-speed position tracking performance is down ENTIRELY to IMU performance. It wouldn't be possible at all without another absolute reference system (optical, magnetic or otherwise) but it's the IMU that's doing the grunt-work.		For Constellation, high-speed position tracking performance is down ENTIRELY to IMU performance. It wouldn't be possible at all without another absolute reference system (optical, magnetic or otherwise) but it's the IMU that's doing the grunt-work.

	Constellation's [[~~external camera sensor~~]] is genlocked; they capture a frame at the same point in time. That means all marker positions are known at the exact same time. As for Constellation having a 'smearing' issue: Commercial optical MCAP systems do not generally use active markers (though some do), but retroreflective markers and an illumination system adjacent to the camera lens. These relative dim markers are still easily discriminable in all but the harshest (e.g. outdoors in direct sunlight) conditions. If you're being clever with your blob tracking, you can even use the blob shape from the smear in order to provide an instantaneous velocity measurement, though it's generally just easier to drop the shutter speed and make your markers brighter.		Constellation's [[Oculus Sensor]] is genlocked; they capture a frame at the same point in time. That means all marker positions are known at the exact same time. As for Constellation having a 'smearing' issue: Commercial optical MCAP systems do not generally use active markers (though some do), but retroreflective markers and an illumination system adjacent to the camera lens. These relative dim markers are still easily discriminable in all but the harshest (e.g. outdoors in direct sunlight) conditions. If you're being clever with your blob tracking, you can even use the blob shape from the smear in order to provide an instantaneous velocity measurement, though it's generally just easier to drop the shutter speed and make your markers brighter.

	==References==		==References==

Neo222 at 22:45, 11 December 2016

2016-12-11T22:45:59Z

← Older revision		Revision as of 22:45, 11 December 2016
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			==Introduction==
	[[Constellation]] is a optical-based [[outside-in tracking\|outside-in]] [[positional tracking]] system developed by [[Oculus VR]] for the [[Oculus Rift (Platform)\|Oculus Rift]] [[Oculus Rift#Devices\|devices]]. Similar to [[Lighthouse]], Constellation is able to track both the [[HMD]] and [[Oculus Touch]] controllers. Unlike Lighthouse, Constellation utilizes [[optical sensor]]s that detect the IR LED markers on the tracked devices. It features 360 degrees tracking and is suitable for both seated and standing [[VR]] experiences.		[[Constellation]] is a optical-based [[outside-in tracking\|outside-in]] [[positional tracking]] system developed by [[Oculus VR]] for the [[Oculus Rift (Platform)\|Oculus Rift]] [[Oculus Rift#Devices\|devices]]. Similar to [[Lighthouse]], Constellation is able to track both the [[HMD]] and [[Oculus Touch]] controllers. Unlike Lighthouse, Constellation utilizes [[optical sensor]]s that detect the IR LED markers on the tracked devices. It features 360 degrees tracking and is suitable for both seated and standing [[VR]] experiences.

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	===Tracking Volume===		===Tracking Volume===
	Constellation has similar tracking volume as [[Lighthouse]]. It is able to deliver a room-scale VR experience. Multiple optical sensors can be employed to track the HMD and controllers in order to reduce [[occlusion]] and increase tracking volume. While technically capable, Oculus is not currently focusing on a room-scale VR experience. [[Palmer Luckey]] mentioned that developers wanted a larger demographic of users. Requiring users to not only have powerful computers for the [[Rift]], but also an entire room dedicated to VR, is too much.<ref>https://www.youtube.com/watch?v=HKxPRrY7K0E</ref>		Constellation has similar tracking volume as [[Lighthouse]]. It is able to deliver a room-scale VR experience. Multiple optical sensors can be employed to track the HMD and controllers in order to reduce [[occlusion]] and increase tracking volume. While technically capable, Oculus is not currently focusing on a room-scale VR experience. [[Palmer Luckey]] mentioned that developers wanted a larger demographic of users. Requiring users to not only have powerful computers for the [[Rift]], but also an entire room dedicated to VR, is too much.<ref>https://www.youtube.com/watch?v=HKxPRrY7K0E</ref>

			==Room-scale==

	==How Does It Work?==		==How Does It Work?==

Shadowdawn: /* How Does It Work? */

2016-05-01T21:03:04Z

How Does It Work?

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	==How Does It Work?==		==How Does It Work?==
			{{see also\|Sensor fusion}}
	[[Oculus Rift]] uses the [[IMU]]s as the primary positional tracking system. It responds extremely quickly and updates at several hundred Hz (1000Hz sampling, 500Hz reporting). However, IMUs drift due to double-integration of error. The drift is on the order of meters per second. So Constellation do is squelch that error 60 times per second (both have a 60Hz global position update rate) using their optical sensors to provide an absolute position reference.		[[Oculus Rift]] uses the [[IMU]]s as the primary positional tracking system. It responds extremely quickly and updates at several hundred Hz (1000Hz sampling, 500Hz reporting). However, IMUs drift due to double-integration of error. The drift is on the order of meters per second. So Constellation do is squelch that error 60 times per second (both have a 60Hz global position update rate) using their optical sensors to provide an absolute position reference.

Shadowdawn: /* How Does It Work? */

2016-05-01T21:00:45Z

How Does It Work?

← Older revision		Revision as of 21:00, 1 May 2016
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	==How Does It Work?==		==How Does It Work?==
			[[Oculus Rift]] uses the [[IMU]]s as the primary positional tracking system. It responds extremely quickly and updates at several hundred Hz (1000Hz sampling, 500Hz reporting). However, IMUs drift due to double-integration of error. The drift is on the order of meters per second. So Constellation do is squelch that error 60 times per second (both have a 60Hz global position update rate) using their optical sensors to provide an absolute position reference.

			For Constellation, high-speed position tracking performance is down ENTIRELY to IMU performance. It wouldn't be possible at all without another absolute reference system (optical, magnetic or otherwise) but it's the IMU that's doing the grunt-work.

			Constellation's [[external camera sensor]] is genlocked; they capture a frame at the same point in time. That means all marker positions are known at the exact same time. As for Constellation having a 'smearing' issue: Commercial optical MCAP systems do not generally use active markers (though some do), but retroreflective markers and an illumination system adjacent to the camera lens. These relative dim markers are still easily discriminable in all but the harshest (e.g. outdoors in direct sunlight) conditions. If you're being clever with your blob tracking, you can even use the blob shape from the smear in order to provide an instantaneous velocity measurement, though it's generally just easier to drop the shutter speed and make your markers brighter.

	==References==		==References==

Xinreality at 21:34, 28 April 2016

2016-04-28T21:34:48Z

← Older revision		Revision as of 21:34, 28 April 2016
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	{{stub}}		{{stub}}
	[[Constellation]] is a optical-based [[positional tracking]] system developed by [[Oculus VR]] for the [[Oculus Rift (Platform)\|Oculus Rift]] [[Oculus Rift#Devices\|devices]]. Similar to [[Lighthouse]], Constellation is able to track both the [[HMD]] and [[Oculus Touch]] controllers. Unlike Lighthouse, Constellation utilizes [[optical sensor]]s that detect the IR LED markers on the tracked devices. It features 360 degrees tracking and is suitable for both seated and standing [[VR]] experiences.		[[Constellation]] is a optical-based [[outside-in tracking\|outside-in]] [[positional tracking]] system developed by [[Oculus VR]] for the [[Oculus Rift (Platform)\|Oculus Rift]] [[Oculus Rift#Devices\|devices]]. Similar to [[Lighthouse]], Constellation is able to track both the [[HMD]] and [[Oculus Touch]] controllers. Unlike Lighthouse, Constellation utilizes [[optical sensor]]s that detect the IR LED markers on the tracked devices. It features 360 degrees tracking and is suitable for both seated and standing [[VR]] experiences.

	Constellation is an open platform that allows third-party hardware manufactures to create their own controllers that utilize the tracking system.<ref>http://techcrunch.com/2015/06/12/oculus-app-store/</ref> These manufactures will be able to use the Constellation API to create their own positionally tracked [[accessories]] for the [[Rift]].		Constellation is an open platform that allows third-party hardware manufactures to create their own controllers that utilize the tracking system.<ref>http://techcrunch.com/2015/06/12/oculus-app-store/</ref> These manufactures will be able to use the Constellation API to create their own positionally tracked [[accessories]] for the [[Rift]].

Xinreality at 21:02, 27 April 2016

2016-04-27T21:02:29Z

← Older revision		Revision as of 21:02, 27 April 2016
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	{{stub}}		{{stub}}
	[[Constellation]] is a optical-based [[positional tracking]] system developed by [[Oculus VR]] for the [[Oculus Rift (Platform)]] [[Oculus Rift#Devices\|devices]]. Similar to [[Lighthouse]], Constellation is able to track both the [[HMD]] and [[Oculus Touch]] controllers. Unlike Lighthouse, Constellation utilizes [[optical sensor]]s that detect the IR LED markers on the tracked devices. It features 360 degrees tracking and is suitable for both seated and standing [[VR]] experiences.		[[Constellation]] is a optical-based [[positional tracking]] system developed by [[Oculus VR]] for the [[Oculus Rift (Platform)\|Oculus Rift]] [[Oculus Rift#Devices\|devices]]. Similar to [[Lighthouse]], Constellation is able to track both the [[HMD]] and [[Oculus Touch]] controllers. Unlike Lighthouse, Constellation utilizes [[optical sensor]]s that detect the IR LED markers on the tracked devices. It features 360 degrees tracking and is suitable for both seated and standing [[VR]] experiences.

	Constellation is an open platform that allows third-party hardware manufactures to create their own controllers that utilize the tracking system.<ref>http://techcrunch.com/2015/06/12/oculus-app-store/</ref> These manufactures will be able to use the Constellation API to create their own positionally tracked [[accessories]] for the [[Rift]].		Constellation is an open platform that allows third-party hardware manufactures to create their own controllers that utilize the tracking system.<ref>http://techcrunch.com/2015/06/12/oculus-app-store/</ref> These manufactures will be able to use the Constellation API to create their own positionally tracked [[accessories]] for the [[Rift]].

Xinreality: Text replacement - "Oculus Rift" to "Oculus Rift (Platform)"

2016-04-27T18:30:41Z

Text replacement - "Oculus Rift" to "Oculus Rift (Platform)"

← Older revision		Revision as of 18:30, 27 April 2016
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	{{stub}}		{{stub}}
	[[Constellation]] is a optical-based [[positional tracking]] system developed by [[Oculus VR]] for the [[Oculus Rift]] [[Oculus Rift#Devices\|devices]]. Similar to [[Lighthouse]], Constellation is able to track both the [[HMD]] and [[Oculus Touch]] controllers. Unlike Lighthouse, Constellation utilizes [[optical sensor]]s that detect the IR LED markers on the tracked devices. It features 360 degrees tracking and is suitable for both seated and standing [[VR]] experiences.		[[Constellation]] is a optical-based [[positional tracking]] system developed by [[Oculus VR]] for the [[Oculus Rift (Platform)]] [[Oculus Rift#Devices\|devices]]. Similar to [[Lighthouse]], Constellation is able to track both the [[HMD]] and [[Oculus Touch]] controllers. Unlike Lighthouse, Constellation utilizes [[optical sensor]]s that detect the IR LED markers on the tracked devices. It features 360 degrees tracking and is suitable for both seated and standing [[VR]] experiences.

	Constellation is an open platform that allows third-party hardware manufactures to create their own controllers that utilize the tracking system.<ref>http://techcrunch.com/2015/06/12/oculus-app-store/</ref> These manufactures will be able to use the Constellation API to create their own positionally tracked [[accessories]] for the [[Rift]].		Constellation is an open platform that allows third-party hardware manufactures to create their own controllers that utilize the tracking system.<ref>http://techcrunch.com/2015/06/12/oculus-app-store/</ref> These manufactures will be able to use the Constellation API to create their own positionally tracked [[accessories]] for the [[Rift]].

Shadowdawn at 11:50, 18 January 2016

2016-01-18T11:50:10Z

← Older revision		Revision as of 11:50, 18 January 2016
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	==Oculus Rift CV1==		==Oculus Rift CV1==
	[[File:oculus rift cv1 tracking volume1.png\|300px\|thumb\|[[Tracking volume]]: 100°H x 70°V (>18 feet range)]] [[File:oculus rift cv1 tracking volume2.png\|300px\|~~Thumb~~\|[[Tracking volume]]: 100°H x 70°V (>18 feet range)]]		[[File:oculus rift cv1 tracking volume1.png\|300px\|thumb\|[[Tracking volume]]: 100°H x 70°V (>18 feet range)<br>Room size: 15 feet by 15 feet]] [[File:oculus rift cv1 tracking volume2.png\|300px\|thumb\|[[Tracking volume]]: 100°H x 70°V (>18 feet range)<br>Room size: 15 feet by 15 feet]]
	{{see also\|Oculus Rift CV1}}		{{see also\|Oculus Rift CV1}}
	The first iteration of the system will be released with [[Oculus Rift CV1]] in Q1 2015. The [[Rift]] will utilize an [[external camera sensor]] that sits on top of a thin and malleable pole about a foot in length. The entire setup can be placed on a desk similar to a lamp. The sensor and its mount is black in color. It is small, sleek and looks like a small desk lamp.		The first iteration of the system will be released with [[Oculus Rift CV1]] in Q1 2015. The [[Rift]] will utilize an [[external camera sensor]] that sits on top of a thin and malleable pole about a foot in length. The entire setup can be placed on a desk similar to a lamp. The sensor and its mount is black in color. It is small, sleek and looks like a small desk lamp.

Shadowdawn at 11:49, 18 January 2016

2016-01-18T11:49:28Z

← Older revision		Revision as of 11:49, 18 January 2016
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	Constellation is an open platform that allows third-party hardware manufactures to create their own controllers that utilize the tracking system.<ref>http://techcrunch.com/2015/06/12/oculus-app-store/</ref> These manufactures will be able to use the Constellation API to create their own positionally tracked [[accessories]] for the [[Rift]].		Constellation is an open platform that allows third-party hardware manufactures to create their own controllers that utilize the tracking system.<ref>http://techcrunch.com/2015/06/12/oculus-app-store/</ref> These manufactures will be able to use the Constellation API to create their own positionally tracked [[accessories]] for the [[Rift]].

	==CV1==		==Oculus Rift CV1==
			[[File:oculus rift cv1 tracking volume1.png\|300px\|thumb\|[[Tracking volume]]: 100°H x 70°V (>18 feet range)]] [[File:oculus rift cv1 tracking volume2.png\|300px\|Thumb\|[[Tracking volume]]: 100°H x 70°V (>18 feet range)]]
			{{see also\|Oculus Rift CV1}}
	The first iteration of the system will be released with [[Oculus Rift CV1]] in Q1 2015. The [[Rift]] will utilize an [[external camera sensor]] that sits on top of a thin and malleable pole about a foot in length. The entire setup can be placed on a desk similar to a lamp. The sensor and its mount is black in color. It is small, sleek and looks like a small desk lamp.		The first iteration of the system will be released with [[Oculus Rift CV1]] in Q1 2015. The [[Rift]] will utilize an [[external camera sensor]] that sits on top of a thin and malleable pole about a foot in length. The entire setup can be placed on a desk similar to a lamp. The sensor and its mount is black in color. It is small, sleek and looks like a small desk lamp.