# Application of UAV-based photogrammetry and normalised water index (NDWI) to estimate the rock mass rating (RMR): A case study

> Research article (Physics and Chemistry of the Earth Parts A/B/C, 2022) · cited 10× · AI/ML

**Wikidata**: [openalex:W4298014586](https://www.wikidata.org/wiki/openalex:W4298014586)  
**Source**: https://4ort.xyz/entity/application-of-uav-based-photogrammetry-and-normalised-water-index-ndwi-to-estimate-the-rock-mass-rating-rmr-a-case-stud