# Facial expression recognition using modified Viola-John’s algorithm and KNN classifier

> Research article (Multimedia Tools and Applications, 2020) · cited 45× · AI/ML

**Wikidata**: [openalex:W3002513835](https://www.wikidata.org/wiki/openalex:W3002513835)  
**Source**: https://4ort.xyz/entity/facial-expression-recognition-using-modified-viola-johns-algorithm-and-knn-classifier