The MTVI1 operator algorithm computes the Modified Triangular Vegetation Index 1 from a given product.

The MTVI1 results from the following equation:

MTVI1 = 1.2 * (1.2 * (N - G) - 2.5 * (R - G))

, where:

The bands are:

- G is the Green band
- R is the Red band
- N is the NIR band

Also the processor computes an additional flags band called 'mtvi1_flags' with the following bit coding:

Bit Position	Description
Bit 0	The computed value for MTVI1 is NAN or is Infinite
Bit 1	The computed value for MTVI1 is less than -1 (minus one)
Bit 2	The computed value for MTVI1 is greater than 1 (one)