| NDPonI Algorithm Specification | |
The NDPonI operator algorithm computes the
Normalized Difference
Pond Index from a given product.
The NDPonI results from the following equation:
NDPonI = (S1 - G) / (S1 + G)
, where:
The bands are:
- G is the Green band
- S1 is the SWIR 1 band
Also the processor computes an additional flags band called 'ndponi_flags' with the following bit coding:
| Bit Position | Description |
|---|---|
| Bit 0 | The computed value for NDPonI is NAN or is Infinite |
| Bit 1 | The computed value for NDPonI is less than -1 (minus one) |
| Bit 2 | The computed value for NDPonI is greater than 1 (one) |