The IKAW operator algorithm computes the Kawashima Index from a given product.

The IKAW results from the following equation:

IKAW = (R - B) / (R + B)

, where:

The bands are:

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

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

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