The NDBaI operator algorithm computes the Normalized Difference Bareness Index from a given product.

The NDBaI results from the following equation:

NDBaI = (S1 - T) / (S1 + T)

, where:

The bands are:

- S1 is the SWIR 1 band
- T is the Thermal band

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

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