Water Masking Plugin
Plugin ID: 5325
A comprehensive tool for extracting water masks and generating smoothed waterbody polygons from multispectral satellite imagery.
(5) votes
Water Masking Plugin is a specialized QGIS toolkit designed to extract accurate water masks and generate smoothed waterbody polygons from multispectral satellite imagery.
Core Workflow:
1-Indices Calculation: Calculates NDVI (Normalized Difference Vegetation Index), MNDWI (Modified Normalized Difference Water Index), and NWI (New Water Index).
2-Water Masking Equation: Uses the equation (MNDWI > 0) AND (NWI > 0) AND (NDVI < 0.1) to extract the water mask.
3-Noise Removal: Applies a sieve filter to remove isolated noise pixels.
4-Geometry Smoothing: Rounds the sharp stair-step edges of the final polygon.