Author: CSDN @ _Yakult_
This article introduces the method and code for extracting water body masks through the Google Earth Engine platform and using Landsat satellite remote sensing data. Through processing steps such as cropping and cloud removal, the final image with the water mask is visualized and exported. This method is based on the normalized difference water index (MNDWI) and OTSU threshold calculation technology, using a custom edge computing water mask function. Based on edge detection and OTSU threshold calculation technology, this function obtains the water body mask image by processing Canny edge, histogram analysis and image segmentation.
Figure 1 Color composite
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Figure 2 Water body mask
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