# Facial Action Units-Based Image Retrieval for Facial Expression Recognition

> Research article (IEEE Access, 2019) · cited 42× · AI/ML

**Wikidata**: [openalex:W2907178645](https://www.wikidata.org/wiki/openalex:W2907178645)  
**Source**: https://4ort.xyz/entity/facial-action-units-based-image-retrieval-for-facial-expression-recognition