[jcbe]

They use the difference between measured red and infrared light divided by the sum of measured red and infrared light https://en.wikipedia.org/wiki/Normalized_difference_vegetati...

[motbus3]

I've read it and it states it is not an useful metric and, please correct me if I'm wrong, does not say anything about measuring fake plants. As far as I understood, it does use the reflectance in red and infra red to detect soil, water and vegetation, but it was not designed to detect fake green plastic from plants anyway.

I mean, who would think someone would use fake grass and fake plants and also use paint in mountains. It is so stupid that no one would even think in measuring it.

[relaxing]

Plastic doesn't look like foliage under NIR.