# Automated facial expression recognition based on histograms of oriented gradient feature vector differences

> Research article (Signal Image and Video Processing, 2015) · cited 42× · AI/ML

**Wikidata**: [openalex:W1154360701](https://www.wikidata.org/wiki/openalex:W1154360701)  
**Source**: https://4ort.xyz/entity/automated-facial-expression-recognition-based-on-histograms-of-oriented-gradient-feature-vector-differences