User Manual

Table Of Contents
Stabilizing with the Tracker Node
When a Tracker node is set to Match Move in the Operations tab, it is capable of a variety of
functions. Applying the motion from the background clip to the foreground clip is the obvious
functionality. However, the Match Move operation is also used for stabilizing footage to to either
completely remove motion from the scene or smooth existing motion.
Here are some common scenarios for stabilization that are handled when the Tracker is set to
Match Move.
A sequence that should be steady has vibrations or undesirable movement.
A sequence that requires a smooth camera move suffers from jarring.
The Tracker Operation tab Match Move set
to BG Only for stabilization.
Stabilization Using the Tracker Match Move Mode
Stabilizing motion completely removes the appearance of motion from the image. The motion
from frame to frame is calculated, and the contents of the frame are transformed to return the
image to a reference position. This position can be either the start or end of the sequence or a
manually selected frame from the sequence.
Stabilization can correct for position with as little as one pattern. Two or more patterns are
required to correct for rotation or scaling within the image.
When the Operation menu is set to Match Move, choosing BG only from the Merge operation
menu stabilizes the background (yellow input) clip. Only the controls that are applicable for
stabilization operations will appear in the Operation tab.
Several of the stabilization controls are always available, collected under the Match Move
Settings disclosure button. These controls are available at all times because the Steady and
Unsteady positions of a tracker are always published. This makes them available for connection
by other controls, even when the Tracker’s operation is not set to match moving.
The Match Move settings.
Merge
The Merge menu determines to which input connection the Tracking data is applied. When
stabilizing an image to remove all motion, or smooth the motion, the Merge button must be set
to BG Only.
Chapter – 73 Using the Tracker Node 1503