Ratio Vegetation Index (RVI) | Space4Water Portal

Ratio Vegetation Index (RVI), also called The Simple Ratio (SR), is a common vegetation index for estimating the amount of vegetation. It is the ratio of light scattered in the NIR and absorbed in red bands, which reduces the effects of atmosphere and topography.

RVI = ρ_NIR / ρ_red

where ρ_RED and ρ_NIR represent spectral reflectances in the red and NIR regions." (ESRI, n.d.)

Reference

ESRI. accessed 28 March, 2024. https://pro.arcgis.com/en/pro-app/latest/arcpy/image-analyst/sr.htm