Welcome to the ARKit to FACS Cheat Sheet! Here you will find breakdowns of how to translate ARKit face shapes into their Facial Action Coding System (FACS) and facial muscle equivalents.
Due to the difficulties in distinguishing similar FACS shapes as well as the lack of clear explanations in the Apple’s devkit, there are many mistranslations of ARKit-to-FACS out there. Beware. This guide is meant to clear up confusion and undo common misconceptions!
See the 外地资产管制系统小抄 for even more FACS references.