5

In the Canvas, a tracker appears at each corner of the foreground object’s bounding box.
In the Inspector, the default track list (Anchor and Rotation-Scale), is replaced with the
Top Left, Top Right, Bottom Right, and Bottom Left trackers.
As with the Analyze Motion trackers, when you drag a tracker to a new position in the
Canvas, a magnified inset appears to help you position each tracker.
3 In the Canvas, drag each tracker to a corner of the background element (in this example,
the corners of the picture frame).
4 Click the Analyze button in the HUD or Behaviors Inspector.
The foreground element is pinned to the background element; four motion paths show
the transformation occurring at each corner.
Note: In this example, a reflection is created on the table using a duplicated and
transformed copy of the tracked image.
1305Chapter 22 Motion Tracking