# Differences in Facial Expressions between Spontaneous and Posed Smiles: Automated Method by Action Units and Three-Dimensional Facial Landmarks

> Research article (Sensors, 2020) · cited 33× · AI/ML

**Wikidata**: [openalex:W3007306082](https://www.wikidata.org/wiki/openalex:W3007306082)  
**Source**: https://4ort.xyz/entity/differences-in-facial-expressions-between-spontaneous-and-posed-smiles-automated-method-by-action-units-and-three-dimens