Apple MA434Z/A User Manual - Page 724

4 To reset the search area back to the original tracking point, click the Reset Track button. Reset Track button You can turn off a tracker using the controls in the Parameters tab. To turn off a specific tracker: m Click the Visibility button located next to the track name in the Parameters tab. Visibility button All visible trackers are processed when you click the track button, regardless of whether they have previously tracked keys. When Visibility is disabled for a tracker, that track is not processed. A limitation of the MatchMove node is that it does not handle the pass-through of upstream onscreen controls, so those controls are in their untransformed state. Viewer Shelf Controls The following table describes the Viewer shelf buttons that become available with the tracking nodes. Button Track Backward/ Track Forward Offset Track-Off Description Click to start the tracking process. All visible trackers attempt to lay down new tracking keyframes. Tracking continues until one of the trackRange frame limits is reached-the upper limit if you are tracking forward or the lower limit if you are tracking backward, or until your correlation falls below your failureTolerance setting. The track search region and the tracking point are linked. If you move one, the other follows. Offset Track-On Reset Track The track search region and the tracking point are offset from each other. If your original sample pattern becomes obscured, offset the search region to a different area. Your keyframes are still saved relative to the original spot. Returns an offset track search region back to the track point. 724 Chapter 25 Image Tracking, Stabilization, and SmoothCam