# Directional Illumination Estimation Sets and Multilevel Matching Metric for Illumination-Robust Face Recognition

> Research article (IEEE Access, 2017) · cited 23× · AI/ML

**Wikidata**: [openalex:W2765543766](https://www.wikidata.org/wiki/openalex:W2765543766)  
**Source**: https://4ort.xyz/entity/directional-illumination-estimation-sets-and-multilevel-matching-metric-for-illumination-robust-face-recognition