# Facial expression recognition techniques: a comprehensive survey

> Research article (IET Image Processing, 2019) · cited 44× · AI/ML

**Wikidata**: [openalex:W2944782230](https://www.wikidata.org/wiki/openalex:W2944782230)  
**Source**: https://4ort.xyz/entity/facial-expression-recognition-techniques-a-comprehensive-survey