User Manual

Rotate Clockwise and Counter-Clockwise Buttons (Corner or Perspective Positioning)
These controls appear only when the operation of the Tracker is set to either Corner or
Perspective Positioning modes. They are used to rotate the foreground image by 90 degrees
before it is applied to the background.
Stabilize Settings
The Tracker node automatically outputs several steady and unsteady position outputs to which
other controls in the Node Editor can be connected. The Stable Position output provides X and
Y coordinates to match or reverse motion in a sequence. These controls are available even
when the operation is not set to Match Move, since the Stable Position output is always
available for connection to other nodes.
Match Move Settings
These settings determine how tracking data is correlated with the reference pattern for making
transforms.
Pivot Type
The Pivot type menu determines how the anchor point for rotation is selected.
 Tracker Average: Averages the location based on the tracking points.
 Selected Tracker: Provides a menu where one of the current trackers can be selected
as the pivot point.
 Manual: Displays X and Y position number fields where you can manually position the
pivot points.
Reference
The Reference mode determines the “snapshot frame” based on the frame where the pattern is
first selected. All Stabilization is intended to return the image back to that reference.
 Select Time: Lets you select the current frame.
 Start: The Snapshot Frame is determined to be the first frame in the tracked path. All
Stabilization is intended to return the image back to that reference.
 Start and End: The Start and End Reference mode is somewhat different from all other
Reference modes. Where the others are intended to take a snapshot frame to which
all stabilization returns, immobilizing the image, the Start and End mode is intended to
smooth existing motion, without removing it. This mode averages the motion between
the Start and End of the path, drawing a straight line between those points.
When this mode is active, it reveals the Reference Intermediate Points control.
Increasing the value of this control increases the number of points in the path used by
the Reference, smoothing the motion from a straight line between Start and End
without making it wholly linear.
 End: The Snapshot Frame is determined to be the last frame in the tracked path. All
Stabilization is intended to return the image back to that reference.
TIP: By default, the Tracker displays a single displacement path of the tracked data in
the Spline Editor. To view X and Y paths of the tracked points in the Spline Editor, go to
Preferences > Globals > Splines.
Chapter – 107 Tracker Nodes 2403