AU23 – vertical lip tightener – orbicularis oris – neutral and pose – Facial Action Coding System – FACS – blendshape – blendshapes – blend shape – blend shapes
Facial Expressions in Art, Science, & Technology
AU23 – vertical lip tightener – orbicularis oris – neutral and pose – Facial Action Coding System – FACS – blendshape – blendshapes – blend shape – blend shapes