I’m currently compositing for a large scale student film called Pages of Destiny. It’s a collaboration with multiple departments including film, production design, and visual effects. The past four weeks I’ve been working on tracking and keying multiple shots while I wait to composite the footage with the visual effects that are currently being made. I plan on making more breakdowns once I get some finished shots but here is some of the work I’ve done so far.

Keying out this green screen involved using many keys and multiple screen corrections. While the screen was a good shade of green straight ahead, the screen color on the ground did not have much green in it. The color values on the left actually had more blue in it than green. There was also lots of different shadows and hot spots t that needed to be fixed. In order to deal with these issues I changed the color space and adjusted the saturation multiple times.

The first two keylights in my script were fairly basic. For my next three keys I used a keyer to pull areas that had a difference in luminance from the background. After a few more regular keylights I adjusted the saturation and this expression b>(r+b)/2?(r+b)/2:b to take some of the blue out of the screen and used two keylights on that. This is what helped fixed the bottom left area of the screen that had more blue than green. After all that keying I rotoscoped some holdout mattes and garbage mattes.

Right now I’m just merging my keys over a light color so it’s easy to see the work that’s been done so far but as soon as I get the CG background I will update my comps.

For this shot I just need to use some keylights and a couple of primattes. I also used multiple color spaces and color corrections in order to get all of my keys.