Tracking volume: Difference between revisions
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{{see also|Positional tracking}} | {{see also|Positional tracking}} | ||
[[Tracking volume]] is a term used to describe the size of the area within which the tracking camera is still able to capture user’s physical movements. Usually, the tracking volume is determined by camera’s horizontal and vertical [[field of view]]. | [[Tracking volume]] is a term used to describe the size of the area within which the tracking camera is still able to capture user’s physical movements. Usually, the tracking volume is determined by camera’s horizontal and vertical [[field of view]]. | ||
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[[File:playstation vr tracking volume1.png|400px]] | [[File:playstation vr tracking volume1.png|400px]] | ||
72°H x 45°V (15 feet range estimate) | 72°H x 45°V (15 feet range estimate)<ref>https://www.reddit.com/r/oculus/comments/41bm6s/vr_headset_tracking_volumes_visualised/</ref> | ||
==Commonly used positional tracking technologies== | ==Commonly used positional tracking technologies== | ||
There are many different [[positional tracking]] technologies used to determine the exact position of the user inside the tracking volume and change the viewpoint accordingly. Such tracking helps to blur the line between virtual experiences and the real world. | There are many different [[positional tracking]] technologies used to determine the exact position of the user inside the tracking volume and change the viewpoint accordingly. Such tracking helps to blur the line between virtual experiences and the real world. | ||
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Magnetic tracking uses a magnetic field and its rotation and strength in relation to a base station to very accurately measure movement and rotation. This technology has already been successfully implemented in devices such as Razor Hydra. This device allows players to experience PC games in a new way and interact with the game world in three dimensions. The biggest downside to magnetic tracking is the relative ease with which it can be disrupted by conductive materials near sensors. | Magnetic tracking uses a magnetic field and its rotation and strength in relation to a base station to very accurately measure movement and rotation. This technology has already been successfully implemented in devices such as Razor Hydra. This device allows players to experience PC games in a new way and interact with the game world in three dimensions. The biggest downside to magnetic tracking is the relative ease with which it can be disrupted by conductive materials near sensors. | ||
=== | ===Ultrasonic tracking=== | ||
[[Ultrasonic tracking]], also known as acoustic tracking, works with multiple speakers and receivers placed in the environment. Acoustic signals are sent in precisely timed bursts. This time is subsequently used to calculate changes in distance and orientation. This type of positional tracking is highly prone to interference due to ambient noise. | |||
===Marker-less Optical Tracking=== | ===Marker-less Optical Tracking=== | ||
In those cases where the geometry of scene or object is already known, it is possible to utilize various object recognition methods to determine changes in real-time without the need to place any markers on the object. | In those cases where the geometry of scene or object is already known, it is possible to utilize various object recognition methods to determine changes in real-time without the need to place any markers on the object. | ||
==References== | |||
<references /> | |||
[[Category:Terms]] | [[Category:Terms]] | ||