2017

Table Of Contents
Working with Trackers
This section provides information that is common to many procedures. It is recommended that you first
read the procedure you want to perform in
Selecting a Stabilizer Method (page 724), and then consult this
section when needed.
Selecting a Reference Point
A good reference point is a high-contrast pattern that has good definition both vertically and horizontally.
Selecting a good reference point is a process of trial and error. Play the clip several times to become familiar
with the material. Ideally, you should try to find a pattern that is present in every frame. In some cases, this
is not always possible and you may have to track two different patterns, track an object that disappears
behind another one, or track an object that moves out of the frame. For more information, see
Tracking
Difficult Shots and Correcting Errors
(page 735).
The frame you use for the reference point should be the frame where the reference image is most representative
in terms of shape, size, and rotation. You can select the reference point from a frame in the middle of the
720 | Chapter 17 Stabilizing and Tracking