The RGBVI operator algorithm computes the Red Green Blue Vegetation Index from a given product.

The RGBVI results from the following equation:

RGBVI = (pow(G , 2.0) - B * R) / (pow(G , 2.0) + B * R)

, where:

The bands are:

- B is the Blue band
- G is the Green band
- R is the Red band

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

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