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

The MBI results from the following equation:

MBI = ((S1 - S2 - N) / (S1 + S2 + N)) + 0.5

, where:

The bands are:

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

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

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