# SAM4Tun: No-training model for tunnel lining point cloud component segmentation

> Research article (Tunnelling and Underground Space Technology, 2025) · cited 14× · AI/ML

**Wikidata**: [openalex:W4406800795](https://www.wikidata.org/wiki/openalex:W4406800795)  
**Source**: https://4ort.xyz/entity/sam4tun-no-training-model-for-tunnel-lining-point-cloud-component-segmentation