Red Edge NDVI
Compute the red edge normalized difference vegetation index as (NIR - red edge) / (NIR + red edge) from reflectances between zero and one, rejecting dark pixels whose reflectances sum to zero.
Description
Compute the red edge normalized difference vegetation index as (NIR - red edge) / (NIR + red edge) from reflectances between zero and one, rejecting dark pixels whose reflectances sum to zero.