Continuing on from the last the week, we proceed on adjusting the despill, i.e. light reflected of the green screen that would illuminate skin or clothes with a greenish tone. As there were subtle differences in the green screen itself, I adjusted it to have a same colour with the use of IBK keyer, as well as the nodes Merge with operations: “average”, “minus” and “plus” from the original footage. I then created the core, base and hair mattes, alphas of which were then piped into the despill footage. As the woman’s head is placed over the blue mountains, I created a separate graded edge alpha with blue undertones, whilst for the body part I used a more green targeted colour correction.
After copying in the alpha, I used a rough roto to cut her out of the footage, colour graded to the background, transformed the image to match the proportions, premultiplied and grained the clip.
