User Manual

Table Of Contents
Corner Positioning
Corner positioning tracks four patterns that are then used to map the four corners of a new
foreground into the background. This technique is generally used to replace signs or mobile
phone screens. The Planar Tracker node is often a better first choice for these types of
tracking tasks.
Perspective Positioning
Perspective positioning again tracks four patterns to identify the four corners of a rectangle.
Each corner is then mapped to a corner of the image, rescaling and warping the image to
remove all apparent perspective. The Planar Tracker node is often a better first choice for
removing perspective from a clip.
Basic Tracker Node Operation
All tracking workflows consist of three fundamental steps.
1 Attach an image you want to track to the yellow background input of the Tracker node.
2 Set the tracking pattern and analyze the clip to create a path.
3 Apply the tracking data to stabilize, match move, corner pin, or remove perspective.
Connect to a Trackers Background Input
You start by connecting the output of the image you want to track to a Tracker node’s
background input. The Tracker node analyzes the image that’s attached to its background input.
You can insert the Tracker node serially with other nodes if you intend to use the Tracker node
itself to do a simple stabilization operation or if you want to use it to perform the function of a
Merge node in a match move or corner-pin operation.
Tracker node connected serially so it can both track and
transform the input images.
However, if you’re just using a Tracker node to analyze data for use with multiple nodes
elsewhere in the comp, you could choose to branch it and leave its output disconnected to
indicate that Tracker node is a data repository. Please note that this is not necessary; serially
connected Tracker nodes can be linked to multiple other nodes as well.
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