The TDVI operator algorithm computes the Transformed Difference Vegetation Index from a given product.

The TDVI results from the following equation:

TDVI = 1.5 * ((N - R) / pow((pow(N , 2.0) + R + 0.5) , 0.5))

, where:

The bands are:

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

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

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