EMBI

The EMBI operator algorithm computes the Enhanced Modified Bare Soil Index from a given product.

The EMBI results from the following equation:

EMBI = ((((S1 - S2 - N) / (S1 + S2 + N)) + 0.5) - ((G - S1) / (G + S1)) - 0.5) / ((((S1 - S2 - N) / (S1 + S2 + N)) + 0.5) + ((G - S1) / (G + S1)) + 1.5)

, where:

The bands are:

- G is the Green band
- N is the NIR band
- S1 is the SWIR 1 band
- S2 is the SWIR 2 band

EMBI-Flags

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

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