In this lesson, we learnt how to stabilise a shot using 2D tracks
With a ‘2D Track’ node, we can track the camera movement of a scene frame by frame to match it with another element. Then with a ‘Transform’ node we can change the translation, rotation, and scale of the frame to stabilise it. We can also create several tracking nodes from the main ‘2D Track’ node to automatically stabilize the scene, to match-move the scene, and to remove or add jitter.
Sometimes the scene has too much noise or grain and the 2D tracker is not able to track it properly. In this case, we can use a ‘Denoise’ node to reduce the image noise or grain, so the camera tracker does not struggle the read the pixel sequence in between frames. We can also use ‘Laplacian’, ‘Median’, or ‘Grade Contrast’ to correct the grain.
As usual, it is important to set a Quality Control (QC) backdrop so we can check that the tracking or any rotoscoping added is properly done.
The assignment of this week is to stabilize the IPhone shot and to add the phone’s screen animation with ‘Rotoscoping’ and ‘Corner Pin’ nodes.
Iphone comp improved: I tried to improve the fingers roto using the green despill set up that the professor sent to us and also improved the screen animation using the ‘curve editor’ to soften the starting and end points of the movement.
I struggled a bit with the fingers rotoscoping as when the fingers are moving faster, it is hard to roto the motion blur. The green despill set up we got from he professor helped a bit but I still do not fully understand how it works so I am sure that I could improve this comp once I learn how the green despill technique works.