Tutorials / Jul 3 2011 - 01:18:53 PM
In this in-depth training video you will learn, step-by-step, to create perfect mattes from green/blue screen footage (process screens) in Nuke. You will learn to use multiple keying approaches that will prepare you for any shot, and the various challenges that inevitably arise. You will learn proven ways to fix problems, such as preserving hair detail and removing color spill from process screens. Color spill is almost always a problem and dealing with it is one of the most important aspects of integrating your process screen elements into a shot. After learning these techniques Nuke will become an indispensible solution for even the most challenging keying and channel operations.
Simple Color Difference KeySimple Color Difference Key
In a green screen shot, for example, simply subtracting the green from the red channel can create a good starting point for a matte. All commercial keyers will take you some of the way there but, more often than not, your shot will require a multiple step solution.
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