# Facial Expression Detection Techniques: Based on Viola and Jones Algorithm and Principal Component Analysis

> Research article (2015 Fifth International Conference on Advanced Computing & Communication Technologies, 2015) · cited 58× · AI/ML

**Wikidata**: [openalex:W2079944188](https://www.wikidata.org/wiki/openalex:W2079944188)  
**Source**: https://4ort.xyz/entity/facial-expression-detection-techniques-based-on-viola-and-jones-algorithm-and-principal-component-analysis