Water Masking Plugin
Plugin ID: 5325
A comprehensive tool for extracting water masks and generating smoothed waterbody polygons from multispectral satellite imagery.
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<h3>Water Masking Plugin: Advanced Waterbody Extraction</h3>
<p><b>Water Masking Plugin</b> is a specialized QGIS toolkit designed to extract accurate water masks and generate smoothed waterbody polygons from multispectral satellite imagery.</p>
<p><b>Core Workflow:</b></p>
<ul>
<li><b>1. Indices Calculation:</b> Calculates NDVI (Normalized Difference Vegetation Index), MNDWI (Modified Normalized Difference Water Index), and NWI (New Water Index).</li>
<li><b>2. Water Masking Equation:</b> Uses the equation (MNDWI > 0) AND (NWI > 0) AND (NDVI < 0.1) to extract the water mask.</li>
<li><b>3. Noise Removal:</b> Applies a sieve filter to remove isolated noise pixels.</li>
<li><b>4. Geometry Smoothing:</b> Rounds the sharp stair-step edges of the final polygon.</li>
</ul>
<p><i>Developed by Mohamed Aly Nasef</i></p>
