WDRVI

The WDRVI operator algorithm computes the Wide Dynamic Range Vegetation Index from a given product.

The WDRVI results from the following equation:

WDRVI = (alpha * N - R) / (alpha * N + 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
- alpha is the Weighting coefficient used for WDRVI, BWDRVI and NDPI coefficient

WDRVI-Flags

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

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