User Manual

4 (Optional) If moving objects partially cover up or occlude the planar surface, you may
wish to connect a mask that surrounds and identifies these occlusions to the white
“occlusion mask” input of the Planar Tracker. This lets the Planar Tracker ignore details
that will cause problems.
When using the Hybrid Tracker, providing a mask to deal with occluding objects is
nearly mandatory, while with the Point Tracker it is recommended to try tracking
without a mask.
5 If necessary, move the playhead back to the reference frame, which in this case was
the first frame. Then, click the Track To End button and wait for the track to complete.
The Analyze buttons of the Planar Tracker.
As the clip tracks, you can see track markers and trails (if they’re enabled in the Options
tab of the Inspector) that let you see how much detail is contributing to the track, and
the direction of motion that’s being analyzed.
During tracking, you can see track markers and trails to follow how well the track is going.
6 Once the track is complete, play through the clip to visually inspect the track so you can
evaluate how accurate it is. Does it stick to the surface? Switching to Steady mode can
help here, as scrubbing through the clip in Steady mode will help you immediately see
unwanted motion in the track.
7 Since we’re doing a match move, click the Create Planar Transform button to export a
Planar Transform node that will automatically transform either images or masks to follow
the analyzed motion of the plane you tracked.
Clicking Create Planar Transform to create a node to use
to transform other images or masks.
In this case, the Planar Transform node will be inserted after a pair of Background and
Paint nodes that are being used to put some irritatingly trendy tech jargon graffiti on the
wall. The Planar Transform will automatically transform the Paint node’s output
connected to its background input to match the movement of the wall.
Chapter – 74 Planar Tracking 1525