Labels Pane

The Labels pane is used to assign, remove, and edit marker labels in the 3D data and is used along with the Editing Tools for complete post-processing. For a detailed explanation of the labeling workflow, read the Labeling page.


Marker Labels

  • Labels shown in white are tracked in the current frame. Labels shown in magenta are not.

  • The Gaps column shows the percentage of occluded gaps values. If the trajectory has no gaps (100% complete), no number is shown.

Labeling Settings

Labeling Range Settings

All or Selected

Assign labels to a selected marker for all, or selected, frames in a capture.

Spike or Fragment

Apply labels to a marker within the frame range bounded by trajectory gaps and spikes (erratic change). The Max Spike value sets the threshold for spikes which will be used to set the labeling boundary. The Max Gap size determines the tolerable gap size in a fragment, and trajectory gaps larger than this value will set the labeling boundary.

Swap Spike or Fragment

Apply labels only to spikes created by labeling swaps. This setting is efficient when correcting labeling swaps.

Max Gap

This sets the tolerable gap sizes for both gap ends of the fragment labeling.

Max Spike

Sets the max allowable velocity of a marker (mm/frame) for it to be considered as a spike.

Apply Labels

When using the Spike or Fragment range setting, the label will be applied until the marker trajectory is discontinued with a gap that is larger than the maximum gap defined above. When using the All or Selected range setting, the label will be applied to the entire trajectory or just the selected ranges.


Assigns the selected label onto a marker for current frame and frames forward.


Assigns selected label onto a marker for current frame and frames backward.

Forwards & backwards

Assigns selected label onto the marker for current frame, frames forward, and frames backward.

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