User Manual

Table Of Contents
Search Rectangle
Whenever the mouse moves over the pattern rectangle, a second rectangle with a dashed
outline appears. The dashed outline represents the search area, which determines how far
away from the current pattern the Tracker looks in the next frame. The search area should
always be larger than the pattern, and it should be large enough to encompass the largest
frame-to-frame movement in the scene. Faster moving objects require larger search areas, and
slower moving objects can get away with smaller search areas. The larger the search area, the
longer it takes to track, so try not to make the search area larger than necessary. If the selected
Tracker has a custom name, the name of that Tracker is displayed as a label at the bottom right
of the search area rectangle.
The search rectangle is the area searched from
frame to frame to locate the pattern
Repositioning the Tracker
The pattern rectangle has a small handle in the upper-left corner. Dragging on the handle
repositions the pattern. An enlarged view of the pattern is displayed under your mouse pointer
to assist with the precise positioning of the pattern. This thumbnail disappears when the mouse
button is released. You can adjust the magnification ratio in the Inspector’s Options tab.
Dragging the handle magnifies the pattern rectangle for precise placement
TIP: There is no limit to the number of trackers that can be used in one composition, or
the number of objects that use the tracking data. There is also no limit to the number of
patterns that can be tracked by a single Tracker node. This chapter serves as a
reference for the various controls in the Tracker, but we strongly suggest you read the
more general information in Chapter 15, “Using the Tracking Node” in the Fusion Studio
manual or Chapter 65 in the DaVinci Resolve manual.
The Tracker can be employed in two forms: as a node in the Node Editor or as a
modifier attached to a parameter. When used as a node in the Node Editor, the image
tracked comes from the input to the Tracker node. When used as a modifier, controls
appear in the Modifiers tab for the node with the connected control. Tracker Modifiers
can track only one pattern, but the image source can come from anywhere in the
composition. Use this technique when tracking a quick position for an element.
Chapter – 107 Tracker Nodes 2392