Elevator platform

Shifting gears, I decided to go back and finally try to cleanly remove the green screen from the elevator platform shot once and for all. This shot has eluded me on several prior attempts and the screenshot below shows why:

It was our first greenscreen setup and as you can see, the screen isn't so well illuminated. It runs from very dark green to white at the highlight. And then the green gets heavily reflected in the boxes and the packing tape, and also tints the white clothes of the actors. A fine chain that hangs across the opening doesn't help either. Below is the current state of the removal. There were about thirty different color keys applied to it over seven different layers. In general, on difficult removal shots like this, the troublesome areas get separated onto unique layers to then solve the problems of each area rather than try to apply an effect to the entire shot. There was also a bit of rotoscoping to handle some fine detail near the clothes, but it still needs a bit more work. The surveyor's shirt breaks up once he steps aboard and that will need a bit of rotoscoping to clean up. As much green tinting was removed as possible, but too much color correction changes all the other colors. This is one shot that is just going to pass scrutiny.. barely.. luckily, the shots that follow on the elevator are fantastic.