Mon Oct 18, 2021 12:38 am
Yes, draw a window INSIDE the person, then use that as a mask (invert the window) so it only does the chromakey OUTSIDE the mask. I have to use garbage mattes like this a lot of times, particularly in shots that need relighting: one person is "lit" with a window, then another crosses in front of them. You have to use another tracked window to avoid having the second person get affected by the first person's correction.
This is the essence of dealing with Occluded Objects, and that and garbage mattes go hand in hand. Very important concept in VFX and color. Basically, it boils down to "only have the effect change what I want, not what I don't want."
marc wielage, csi • VP/color & workflow • chroma | hollywood