# Abnormal event detection via covariance matrix for optical flow based feature

> Research article (Multimedia Tools and Applications, 2017) · cited 53× · AI/ML

**Wikidata**: [openalex:W2767933817](https://www.wikidata.org/wiki/openalex:W2767933817)  
**Source**: https://4ort.xyz/entity/abnormal-event-detection-via-covariance-matrix-for-optical-flow-based-feature