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NDVI (Normalized Difference Vegetation Index)


NDVI = (NIR - R) / (NIR + R)


ratio-based index,
limited range: -1<NDVI<1,
sensitive to atmospheric noise


Rouse J.W., Haas R.H., Schell J.A., Deering D.W., 1973. Monitoring vegetation systems in the great plains with ERTS. Third ERTS Symposium, NASA SP-351. 1:309-317
Tucker C.J., 1979. Red and photographic infrared linear combinations for monitoring vegetation. Remote Sens Environ 8:127-150