# Estimating the Threshold of Detection on Tree Crown Defoliation Using Vegetation Indices from UAS Multispectral Imagery

> Research article (Drones, 2019) · cited 42× · AI/ML

**Wikidata**: [openalex:W2982088381](https://www.wikidata.org/wiki/openalex:W2982088381)  
**Source**: https://4ort.xyz/entity/estimating-the-threshold-of-detection-on-tree-crown-defoliation-using-vegetation-indices-from-uas-multispectral-imagery