2017

NOTE The Position, Rotation and Scale settings of the vertices or UV points in Z are reset when entering the
Stabilizer.
7 Do one of the following:
■ Position the trackers on the background clip (Vertice tracking).
■ Position the trackers on the surface texture (UV points tracking).
8 Gang the trackers.
9 Enable Auto Update Reference.
10 Click Analyze to generate the tracking data.
11 After the analysis is complete, click Return.
The Surface menu in Action reappears. The tracking data is automatically applied to the four corners
of the bilinear surface or texture.
12 Enable Edit Track in the Vertices menu to edit tracking data directly from the image window without
having to switch to the Animation channel. The vertices are displayed in blue when Edit Track is
enabled.
Offsetting the Tracking Motion of the Reference
You can apply the tracking information from one point to another point in the image. A dotted line is
displayed between the tracker and the offset target, using the Offset Reference tool. This is useful when you
want to track a portion of an image that does not have an adequate tracking anchor point.
In this example, we want to replace the green screen in the TV clip with another shot.
Images courtesy of Turner Broadcasting Systems
However, when entering the stabilizer, we can see that we don't have proper anchor points on the TV clip,
where the four corners of our replacement shot are positioned.
732 | Chapter 17 Stabilizing and Tracking