Resizing the Reference and Tracker Boxes

You can resize the reference box to make it surround the feature you chose to track more closely. By only including the recognizable feature in the box with no other details that may change throughout the footage, you minimize the possibility of the tracker losing the reference point.

NoteSometimes a small reference point does not give good results. Try enlarging the box to include more of the selected feature. Note that the larger the box, the slower the analyzing speed.

Resize the tracker box, so that it is large enough to accommodate the most frame-to-frame movement of the reference point. For example, if the movement of the reference point is mostly horizontal, you can increase the width and reduce the height of the tracker box. If there is a large amount of movement both horizontally and vertically, increase both the width and the height of the tracker box.

(a) Reference box (b) Tracker box

To resize the reference and tracker boxes:

Do one of the following:

(a) Resize height cursor (b) Resize width cursor (c) Resize proportionally cursor
- To resize a box interactively on the frame, position the cursor on the edge of the box you want to resize. The cursor changes shape. Drag the box to the desired dimension.
- To use the Tracker or Tracker Analyzer menu to move or resize the reference or tracker box for the current tracker, enter values in the appropriate fields.

(a) Reference box position and size fields (b) Tracker box position and size fields