SARVI

The SARVI operator algorithm computes the Soil Adjusted and Atmospherically Resistant Vegetation Index from a given product.

The SARVI results from the following equation:

SARVI = (1 + l) * (N - (R - (R - B))) / (N + (R - (R - B)) + l)

, where:

The bands are:

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

and the coefficients are:

- l is the Canopy background adjustment coefficient

SARVI-Flags

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

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