Fractional cover from NDVI

Question

Hello;

I trying to calculate fractional vegetation cover from NDVI. I calculated NDVI but I don't know how can I extract NDVI soil or NDVI veg from my NDVI map to use formula.

Fc=(NDVI—NDVI soil)/(NDVI veg—NDVI soil)

Thank you.

XanderBakker · Answer

Probably not completely on topic, but this article ("Remote Sensing of Fractional Green Vegetation Cover Using
Spatially-Interpolated Endmembers") might be an interesting read: https://pdfs.semanticscholar.org/3b57/f310795c572c02c59e1c0f3a0658d112c0cb.pdf