The tracker automatically creates and places computed 2D points, using information from the key points, in the sequence, that are used in the camera solving process. The type of computed point generated depends on the type of tracking process that you run to create them.
There are three types of computed 2D points shown by the following symbols that appear in the Track window.
If you have not created a time range, MatchMover deletes the point at the current time. If you have created a time range, MatchMover deletes all points within the range.
Locking a track protects a track against modification or deletion. For example, a locked point will not be removed from the project when you cleanup the tracks.
A Locked icon appears beside the corresponding point track in the Project window and the Track window indicating that the point track is locked. Alternatively, simply right-click a track point in the 2D View or in the Point Tracks folder in the Project window or the Track window and in the pop-up menu, select Locked.
Each track is displayed with a specific configurable color, either in 2D or 3D Mode. If the track color is the default one (black), it’s displayed as such.
If a custom color is set, then this color will be used for the 2D label, the 2D track and the corresponding 3D helper (3D reconstruction).