Pulling Keys
Steve Wright · 2024
This chapter is a million ways to create a key and all about rotoscoping. Creating keys to mask off arbitrary bits of an image is an essential skill for compositors. Learn about luma keys and chroma key and how to make your own. What are difference mattes, how to make them, and when to use them? Creating a high bypass filter to mask off just fine details plus how to use it to do digital airbrushing for a “glam pass”, and techniques for creating color difference keys plus a fantastic method of removing edge color contamination from keyed or rotoscoped items are included. There is also a large section on rotoscoping that addresses control point placement strategy, shape breakdown, and four different keyframing strategies and the correct use of B-splines vs. Bezier, how to manage motion blur, and best practices for inspecting the finished roto.