Apple Shake 4 - Manual (Page 722)

722 Chapter 25 Image Tracking, Stabilization, and SmoothCam
• Track point: The center crosshairs
To move the tracker:
m Click a blank area inside of the search region or the track point, then drag.
To resize the tracking region or the reference pattern:
m Drag a corner and the boxes uniformly scale in the X or Y axes.
The larger the search region, the slower the track.
To scale the search region non-uniformly:
m Drag an edge of the search region.
This is good for “leading” the track point. For example, a bus in a clip moves to the
right. Scale the tracker search region to the right as well, since it doesn’t make sense to
scan to the left of the current track pattern for a pattern match. (This is demonstrated
in Tutorial 7, “Tracking and Stabilization,” in the Shake 4 Tutorials.)