Today we did some more motion tracking using the leaves the we created on the last lesson. Firstly we went out and filmed some more footage to track. We wanted flat surfaces so we filmed buildings and signs.
We used the same technique as the last lesson, but this time we added a ramp effect to the colours of the leaves. This is the first one we did.
In the next shot, we decided to have a couple of areas where the leaves were growing. The first above the doorway, the next on the big wall next to it. We used the same technique as before for both. For the second, however, we wanted the vines to become transparent when it grew across the window. Do to this, we had to create a travelling matte. We did this by created a new black solid at tracking it to the window using the same technique as before. On the leaves layer, we then selected the new black solid as the matte layer. Here is the final result.
We then wanted to have a transition between the two clips, so we thought we’d use the tree as a wipe. We did this in the same way as the window. We created a new solid then added a mask to it that was the shape of the tree. We then tracked this solid to the tree itself.
