SEVI

The SEVI operator algorithm computes the Shadow-Eliminated Vegetation Index from a given product.

The SEVI results from the following equation:

SEVI = (N / R) + fdelta * (1.0 / R)

, where:

The bands are:

- R is the Red band
- N is the NIR band

and the coefficients are:

- l is the Canopy background adjustment coefficient
- fdelta is the FDelta coefficient parameter coefficient

SEVI-Flags

Also the processor computes an additional flags band called 'sevi_flags' with the following bit coding:

Bit Position	Description
Bit 0	The computed value for SEVI is NAN or is Infinite
Bit 1	The computed value for SEVI is less than -1 (minus one)
Bit 2	The computed value for SEVI is greater than 1 (one)