Lens Distortion
Before After
We use lensDistortion node to undistort the lens grid.
Also, we can use STmap and shuffle node to make the estimate to share the same distortion information.
PointsTo3D
Apart from using pointcloud, we can also use PointsTo3D node, starting from the camera, to place an asset in 3D place.
We generate the tracking axis from PointsTo3D node and create a geometry with the same route as the axis. Here I used a sphere.
We put pointA at the starting frame, B in the middle, C at the end.
We can also bake selected vertices to mesh when necessary.