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The Tracking Menu lets users create and load "marker sets". Marker sets are files that describe all of the static markers within a scene. Once a marker set is created or loaded NextStage will automatically begin tracking the Kinect’s position and rotation.

 

Load Marker Set

 

Lets users select from a list of previously created marker sets. These files are located in the main NextStage Directory under NextStage Data -> Common -> MarkerSets

 

Save Marker Set

 

Saves the current marker set.

 

Capture Markers

 

Creates a new marker set and captures any retroreflective markers within the Kinect’s field of view. NextStage will keep capturing markers until Capture Markers is pressed again.

 

Refine Markers

 

Refines captured markers by averaging samples captured from multiple positions. Samples will only be taken from the center of the Kinect’s field of view. Any markers not samples will be deleted.

 

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Markers being sampled will appear blue. Markers with sufficient samples will appear green.

 

NextStage will keep refining markers until Refine Markers is pressed again.

 

Selecting Markers

 

Once a marker set has been loaded, markers can be selected by clicking and dragging over the infrared view. Holding shift will let you add to the selection. Holding alt will let you remove from the selection.

 

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Delete Selected

 

Deletes the selected markers.

 

Set Axis

 

Aligns the marker set to the axis defined by the selected markers. This can be used to quickly and accurately orient the marker set to a room.

 

If two markers are selected the axis will be the line that runs between the two points.

 

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If three or more markers are selected the axis will be the line that runs perpendicular to all of the markers. If all of the selected markers are placed on a wall, or the same flat plane, it will be the axis pointing away from that wall.

 

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Set Origin

 

Sets the marker set Origin Point to the selected marker. If multiple markers are selected, the origin will be set to the average position of the markers.

 

Move Origin

 

Lets you manually position the marker set using a 3D gizmo. You will need to press Move Origin again to exit this mode.

 

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Rotate Origin

 

Lets you manually rotate the marker set using a 3D gizmo. You will need to press Rotate Origin again to exit this mode.

 

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Optical Track

 

Optical Track is a feature in NextStage Pro uses an alternative algorithm for estimating the Kinect's pose. This algorithm can produce better results for smaller scenes and when tracking objects closer to the camera, but causes more jitter when rendering far away virtual objects.

 

Tripod Lock

 

Tripod Lock is a feature in NextStage Pro that will automatically detect when the Kinect is static, and smooth the tracking data.

 

Tracking