# Extraction of tunnel center line and cross-sections on fractional calculus, 3D invariant moments and best-fit ellipse

> Research article (Optics & Laser Technology, 2020) · cited 27× · AI/ML

**Wikidata**: [openalex:W3012769608](https://www.wikidata.org/wiki/openalex:W3012769608)  
**Source**: https://4ort.xyz/entity/extraction-of-tunnel-center-line-and-cross-sections-on-fractional-calculus-3d-invariant-moments-and-best-fit-ellipse