# 3D Approaches and Challenges in Facial Expression Recognition Algorithms—A Literature Review

> Research article (Applied Sciences, 2019) · cited 79× · AI/ML

**Wikidata**: [openalex:W2974660039](https://www.wikidata.org/wiki/openalex:W2974660039)  
**Source**: https://4ort.xyz/entity/3d-approaches-and-challenges-in-facial-expression-recognition-algorithmsa-literature-review