The NDCI operator algorithm computes the Normalized Difference Chlorophyll Index from a given product.

The NDCI results from the following equation:

NDCI = (RE1 - R) / (RE1 + R)

, where:

The bands are:

- RE1 is the Red Edge 1 band
- R is the Red band

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

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