This week we learned planar tracking. At first, we learned how to order these different nodes rightly, because even there are just simple nodes but in wrong order, the effects may be different, and we saw several examples of it.
Then we go through shuffle node, by using this node, we can adjust the color channels, on to of that, we can switch channels, for instance, to connect the red channel with the green channel.
Then, we began to practice using the planar tracker. Firstly, we need to use roto and select the area that we want to replace and track it. Then, use display_planar_surface and display_grid_lines to adjust the area we selected, we can see the perspective how the shot is being shoot.
Use CornerPin and select a picture you want to replace with it.
At last, we practiced using the ZDefocus, which is really interesting. By moving the focal_point, we can control the blur area. Apart from that, we can also change the output channel, to see the blur area more clearly, which is really useful.