RI Algorithm Specification |

### RI

The Redness Index algorithm was developed to identify soil colour variations - Pouget et al.(1990)

The RI results from the following equation:

RI = (red_factor * red * red_factor * red) / (green_factor * green * green_factor * green * green_factor * green)

### RI-Flags

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

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