MuWIR

The MuWIR operator algorithm computes the Revised Multi-Spectral Water Index from a given product.

The MuWIR results from the following equation:

MuWIR = - 4.0 * ((B - G) / (B + G)) + 2.0 * ((G - N) / (G + N)) + 2.0 * ((G - S2) / (G + S2)) - ((G - S1) / (G + S1))

, where:

The bands are:

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

MuWIR-Flags

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

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