User Manual

Before fixing this, we drag the Soft Edge slider in the Inspector to the right to blur the edges
just a bit.
Inverting the Garbage Input
Selecting the MatteControl1 node, we open the Garbage Matte controls and click the Invert
checkbox, which immediately gives us the result we want, of the forehead in isolation, ready for
compositing.
Inverting the Garbage Matte input (top), and the resulting inverted mask inverting the forehead (bottom).
Compositing the Painted Forehead Against the Original Image
Almost finished. Next, we’ll add a Merge node to layer the fixed forehead over the original
image being output by the MediaIn node.
We create a Merge node connected to the output of the PlanarTracker node, and then we
connect the MatteControl’s output to the green foreground input of the Merge node. This puts
the cropped and fixed forehead on top of the original image.
The painted forehead composited against the original image.
Match Moving the Mask to the Shot
Now we have the best of both worlds: a fixed forehead and the background of the shot looking
good. However, if we select the Polygon node and then scrub forward in the clip, the fixed
forehead mask drifts out of sync with the motion of the shot, so we have one remaining issue.
Fortunately, match moving the mask to move with the shot is really simple.
Chapter – 72 Paint 1481