User Manual

Adding the PlanarTransform node after a Paint node to match move
it to the background image, combining it via a Merge node.
The result is a seamless match move of the fake graffiti married to the wall in the original clip.
The final result; the paint layer is match moved to the background successfully.
TIP: If you want to composite semi-transparent paint strokes on the wall, or use
Apply modes with paint stroke, you can attach a Paint node to a Background node set
to 100 transparency. The resulting image will be whatever paint strokes you make
against transparency and is easy to composite.
Tips for Choosing Good Planes to Track
The region to track is specified by drawing a polygon on the reference frame. Make sure the
region selected belongs to a physically planar surface in the shot. Sometimes a region that is
only approximately planar can be used. In general, the less planar the surface, the poorer the
quality of the resulting track.
As a rule of thumb, the more pixels in the pattern, the better the quality of the track. In particular,
this means on the reference frame, the pattern to be tracked should:
 Be as large as possible.
 Be as much in frame as possible.
 Be as unoccluded as possible by any moving foreground objects.
 Be at its maximum size (e.g., when tracking an approaching road sign, it is good to pick
a later frame where it is 400 x 200 pixels rather than 80 x 40 pixels).
 Be relatively undistorted (e.g., when the camera orbits around a flat stop sign, it is
better to pick a frame where the sign is face on parallel to the camera rather than a
frame where it is at a highly oblique angle).
If the pattern contains too few pixels or not enough trackable features, this can cause problems
with the resulting track, such as jitter, wobble, and slippage. Sometimes dropping down to a
simpler motion type can help in this situation.
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