= Normalized difference water index
{wiki=Normalized_difference_water_index}
The Normalized Difference Water Index (NDWI) is a remote sensing index used primarily to assess the presence and distribution of water bodies. It helps distinguish between water and non-water features in satellite imagery. The NDWI exploits the reflective properties of water in different parts of the electromagnetic spectrum, particularly focusing on the visible (green) and near-infrared (NIR) wavelengths.
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