Supervised 2D tracking
 
 
 

MatchMover allows manual editing of track points. In addition, advanced users may prefer to manually add tracks before running the automatic tracking process to strengthen the result, or after, to refine the result.

Creating a new track

To create a new track.

  1. Do one of the following:
    • Select 2D Tracking > New Track.
    • Click the New Track icon in the Toolbar.
    • Right-click in the 2D View or in the Point Tracks folder in the Project window or the Track window and select New Track from the pop-up menu.

    MatchMover creates an item in the Point Tracks sub folder in the Project window and the pointer changes to in the Workspace. Whenever the pointer has this appearance, you are in the New Track Creation mode.

  2. Position the pointer where you want to create a key for this track and click.

See Magnifier window for the Magnifier configuration.

NoteYou can simply create tracks in the same way in the 2D or 3D mode using Shift+right-click the background image plane. If you select a track group in the Project window, new tracks will be added automatically to the group. See Creating groups for more information about track groups.

When you add a track, the following icons appear in the Project window indicating the track status.

The left part of the icon shows its calibration status:

The right part of the icon shows its 3D reconstruction status:

In the Parameters Window, or if you right-click any point in the Point Tracks folder in the Project window or the Track window, the following options are checked by default in the pop-up menu and correspond to the icons above table.

The window shows read-only fields:

For example, you want to track a table corner through an image sequence. In image 0, press Shift+right-click the table corner. MatchMover creates the “Track 0” and an intermediate key. The tracker uses this key point to remain on the point track during the tracking process. Now, you can launch the tracker.

The Relations tab just shows the list of relations involving this track. Double-click one to select it.

NoteFor 2D configuration, see Setting the parameters of a single key point and Color Tracking. For 3D survey configuration, see Defining survey points and object mapping.

Selecting tracks

Click a track (either the cross, the pattern, the point or the 3D helper depending on your current view and settings) to select it.

To select several points, do any of the following:

NoteThe currently selected track or a track multiselection can be inverted by right-clicking in the Project Window and selecting Invert Selection from the pop-up menu.

Deleting tracks

To delete tracks, do one of the following:

Merging tracks

When 2D features of the scene move out of the view then back in or are occulted by objects in motion causing the tracker to misinterpret them as distinct points, you can merge the keys from several tracks into one.

  1. Select at least two track points to merge.
  2. Do one of the following:
    • Select 2D Tracking > Merge Tracks.
    • Right-click in the 2D View or the Point Tracks folder in the Project window or the Track window and select Merge Tracks from the pop-up menu.

MatchMover checks whether the selected tracks have keys in common (at the same frame) or not. If not, all keys and computed points are copied to the first tracks, and the other tracks are deleted.

NoteYou can configure MatchMover to merge tracks automatically during the solving by selecting Edit > Preferences and checking the Automatically Merge Tracks option in the 3D Tracking page.