Question abdout 21 implicit 3D keypoints (63-dim).

[wangjue-wzq]

It does not seem clear in the paper how to construct the mapping relationship between the explicit parameters of 21-dims and the implicit 3D landmarks in liveportrait.

[digital-avatar]

This mapping relationship is inspired by LivePortrait's "regional control". You can refer to it here. More detailed mapping relationships can be further explored based on it.