| RI Algorithm Specification | |
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)
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) |