Mouth
General Mouth Parameters
- mouth form - face emotion
- mouth form - eye emotion
- mouth form - nose emotion
- mouth open - lip physics
- mouth open - face physics
- mouth open - lower eyelash physics
mouth Pucker Widen
mouth Pucker Widen out
ios only:
Tongue Out
Cheek Puff
Vbridger ARKit Mouth Parameters
Jaw Open: Jaw drop.
Mouth Shrug: Upward lip tension.
Mouth Funnel: Lip pursing like you do with pronouncing [u:].
mouth Pucker Widen: Mouth expand or contract horizontally. -1 contraction, 1 expansion.
Mouth Press Lip Open: Lip biting or separation. -1 Pressed against each other so almost look like biting the lip, 0 Default state lip closed, +1 Bare teeth.
Full Vbridger vs. Traditional way of rigging mouth
To let vbridger mouth blendshape parameter coexists with regular rigging, there are many different approaches.
When the entire mouth's rig solely depends on Vbridger's ARKit, it requires another route of rigging when compared to traditional way of rigging.
Check official tutorial by PiPuProductions in Vbridger Resources to get more info on how to do full Vbridger mouth.
| Feature | Traditional 3x4 or 4x4 Mouth Rig (Mesh Deformation) | PipuProductions’ vbridger Mouth System |
|---|---|---|
| Base Method | Mesh with multiple keyforms for mouth phonemes, blended by mouth open Y and mouth form (2 parameters) | Mesh with fewer base keyforms to start with, then build ARKit tracking parameters upon |
| Number of Keyforms | Commonly 12 to 16 fixed keyforms corresponding to phonemes | Fewer base shapes but more parameters gets involves as rigging goes |
| Rigging Complexity | Moderate – Mouth lines have 2 parameters (mouth form * mouth open) as base shape, then to add VBridger params, just use blendshapes and weight constraints to deform base mouth keyforms to desired ARKit shape | Higher – the rigging route is mostly different, and mouth lines will have key to many parameters |
| Control Flexibility | Limited to shape keys w/o ARKit parameters when tracking | With ARKit to enable more lip shapes |
| Phoneme Representation | Each shape corresponds to a phoneme or viseme | Phonemes generated by combining deformation parameters, enabling more fluid lip sync |
| Learning Curve | Moderate | Steeper |