In the Processing panel, you can modify settings which affect how Tracker processes object tracking and the type and/or amount of data it makes available for viewing or streaming.
For normal use cases, you're unlikely to need to change the settings in the Processing panel from their default values. For guidance on how to configure the Processing panel for specific applications (ie, high object count or high frame rates), see Understand object booting or contact Vicon Support.
Any setting displayed in bold and italics has been changed from its default value. To return a setting to its default value, at the right of the relevant line in the panel, click the parameter context menu button 
and select Set to default. To set all values to their defaults, click the Default parameters button 
at the top right of the Processing panel.
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Object Tracking section
Tracker 4 uses two strategies for object identification: booting and tracking:
- Booting uses the 3D reconstructions along with the object's known dimensions to locate and fit an objects pose.
- Tracking uses the object's pose information from a previous frame.
In general, if the current frame can't identify an object, the next frame uses booting; if the current frame has the object, the next frame uses tracking.
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| Low Jitter Mode | Sets all cameras to pass grayscale data, allowing jitter reduction algorithms to work. For large systems this may cause system instability, due to network overload. |
| Thread Count | Specify the number of threads to use. If zero (the default), the thread count is automatically calculated. Default: 0 |
| Enable Constant Velocity Tracker | When selected, tracking for fast-moving objects is improved. However, it requires more computation so increases latency and decreases throughput. Default: Enabled |
| Reprojection Threshold | This threshold (in pixels) is used when forming correspondences between centroids and model points. If the camera calibration has drifted and correspondences are being missed then this value can be increased. This value is only used when Auto Bias Handling is disabled. |
| Entrance Threshold | The minimum proportion of markers that must be visible to the system before the object is booted. If it is less than this value, the object is not booted. You can override this value for selected objects by using Object Presets (see Create an object preset). It is important to note:
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| Maximum Boot Iteration Count | The maximum number of iterations allowed for the booting algorithm. Increasing this parameter improves booting quality, but has a small performance cost. Default: 100 |
| Minimum Object Marker Separation | The minimum distance allowed (in mm) between marker positions in order for them to be tracked separately. Default: 10 |
| Boot Recon. Min. Cams | The minimum number of camera rays required to generate the reconstructions that are used for object booting. Default: 2 |
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| Pause Buffer Size | The size (in seconds) of the output cache. For more information about the Pause Buffer, see Live Review. Default: 10.00 s |
DataStream Output section
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