# FTIR spectral imaging enhancement for teacher’s facial expressions recognition in the intelligent learning environment

> Research article (Infrared Physics & Technology, 2018) · cited 24× · AI/ML

**Wikidata**: [openalex:W2885797624](https://www.wikidata.org/wiki/openalex:W2885797624)  
**Source**: https://4ort.xyz/entity/ftir-spectral-imaging-enhancement-for-teachers-facial-expressions-recognition-in-the-intelligent-learning-environment