# A Hierarchical Extractor-Based Visual Rail Surface Inspection System

> Research article (IEEE Sensors Journal, 2017) · cited 229× · AI/ML

**Wikidata**: [openalex:W2761216034](https://www.wikidata.org/wiki/openalex:W2761216034)  
**Source**: https://4ort.xyz/entity/a-hierarchical-extractor-based-visual-rail-surface-inspection-system