The VI6T operator algorithm computes the VI6T Index from a given product.

The VI6T results from the following equation:

VI6T = (N - T / 10000.0) / (N + T / 10000.0)

, where:

The bands are:

- N is the NIR band
- T is the Thermal band

Also the processor computes an additional flags band called 'vi6t_flags' with the following bit coding:

Bit Position	Description
Bit 0	The computed value for VI6T is NAN or is Infinite
Bit 1	The computed value for VI6T is less than -1 (minus one)
Bit 2	The computed value for VI6T is greater than 1 (one)