This is my first experiment in making a proper bone based facial animation rig. This rig doesn’t contain a single morph target and all of the deformation is done with skin envelopes.
Previously, I’ve often used morph targets coupled with jaw and head bones, which works fine but is pretty laborious to set up as you all probably know. This experiment has been probably even more work but I think that’s because it’s the first ever time I’ve done it. I’m hoping that this setup can be transposed to other characters with relative ease.
The benefits are that the face looks less like a collection of poses, it keeps its volume nicely through different expressions and manipulating it with controls on the actual face makes it just plain easy!
The hazards are that there is a lot of tweaking of skin envelopes to get the right part of the face following the right bones and getting a proper “oo” shape is the toughest part (it’s the same with morphs too though).
It’s still work in progress as the worried brow shape needs work, I’ll add a tongue and the “oo” could be a little better.