# An assessment of background removal approaches for improved estimation of rice leaf nitrogen concentration with unmanned aerial vehicle multispectral imagery at various observation times

> Research article (Field Crops Research, 2022) · cited 50× · AI/ML

**Wikidata**: [openalex:W4224294961](https://www.wikidata.org/wiki/openalex:W4224294961)  
**Source**: https://4ort.xyz/entity/an-assessment-of-background-removal-approaches-for-improved-estimation-of-rice-leaf-nitrogen-concentration-with-unmanned