Two methods were undertaken to map the 2018 floods in Kerala, India using Sentinel-1 SAR satellite images in Google Earth Engine and analysis using Python.
A simple change detection method: https://code.earthengine.google.com/?scriptPath=users%2Fn_wilson%2FKerala_flood_extents%3AKerala_Floods%2FSimple%20Method_FINAL
And a image segmentation method using the Otsu algorithm:
https://code.earthengine.google.com/?scriptPath=users%2Fn_wilson%2FKerala_flood_extents%3AKerala_Floods%2FOtsu%20Method_FINAL
Outputs were analysed in Python
The final results were compared to social sensing data of the floods derived derived from twitter and telegram for a comparison of methods.
