1.

NDWI meaning in General ?

Answer» What is Normalized Difference Water Index mean?

Normalized Difference Water Index (NDWI) may refer to one of at least two remote sensing-derived indexes related to liquid water:

One is used to monitor changes in water content of leaves, using near-infrared (NIR) and short-wave infrared (SWIR) wavelengths, proposed by Gao in 1996:

NDWI = ( X n i r − X s w i r ) ( X n i r + X s w i r ) {\displaystyle {\mbox{NDWI}}={\frac {(Xnir-Xswir)}{(Xnir+Xswir)}}}

Another is used to monitor changes related to water content in water bodies, using green and NIR wavelengths, defined by McFeeters (1996):

NDWI = ( X g r e e n − X n i r ) ( X g r e e n + X n i r ) {\displaystyle {\mbox{NDWI}}={\frac {(Xgreen-Xnir)}{(Xgreen+Xnir)}}} reference nan


Discussion

No Comment Found

Related FullForms