Positional tracking: Difference between revisions
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Optical tracking with mark consist of adding an unique marker onto an object you want to track. Then use a camera or multiple cameras to follow the movement and position of the marker. Finally algorithms are used to figure out the position and orientation of the object. | Optical tracking with mark consist of adding an unique marker onto an object you want to track. Then use a camera or multiple cameras to follow the movement and position of the marker. Finally algorithms are used to figure out the position and orientation of the object. | ||
The marker can be active or pass. Active marker, such as an IR light, can flash periodically to sync with the camera. A retroreflector can be used as a passive marker to reflect IR light emitted by the camera to create the same effect as a active one. | The marker can be active or pass. Active marker, such as an IR light, can flash periodically to sync with the camera. A retroreflector can be used as a passive marker to reflect IR light emitted by the camera to create the same effect as a active one. | ||
Multiple markers with unique designs can be deployed. They allow the camera(s) to track the positions of multiple objects at the same time. | |||
===Markerless=== | |||
Certain identifiable features, such as the fingers on your hands, can be tracked by camera(s) even without marker(s). [[Leap Motion]] employs this to find the position and movement of your fingers. | |||
====Depth Map==== | ====Depth Map==== | ||
[[Depth Map camera]] can be used to create the | |||
[[Microsoft]]'s [[Kinect]] uses depth map camera. | |||
===Sensor Fusion=== | ===Sensor Fusion=== | ||