Expression transfer

[heiha324]

Do you know how to use one person's facial expressions to drive another person's model?

[Zielon]

Yes, you need to use relative expression transfer. In the other case, the radiance field will contain a lot of artifacts since absolute expression transfer will change the face shape as well.

Steps:

1. Select a neutral face from the source and target. (the expressions and shapes are not disentangled)
2. Calculate delta expression (selected neutral expression - expressions).
3. Transfer deltas to the neutral face in the target

You can take a look here NeRFace to see how it is done.