| VgNIRBI Algorithm Specification | |
The VgNIRBI operator algorithm computes the
Visible Green-Based
Built-Up Index from a given
product.
The VgNIRBI results from the following equation:
VgNIRBI = (G - N) / (G + N)
, where:
The bands are:
- G is the Green band
- N is the NIR band
Also the processor computes an additional flags band called 'vgnirbi_flags' with the following bit coding:
| Bit Position | Description |
|---|---|
| Bit 0 | The computed value for VgNIRBI is NAN or is Infinite |
| Bit 1 | The computed value for VgNIRBI is less than -1 (minus one) |
| Bit 2 | The computed value for VgNIRBI is greater than 1 (one) |