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Channel Migration mapping

Question asked by lngenzi_riverpartners on Sep 25, 2020

I want to create polygons from NAIP or drone images of a stream over a period of time such as shown below. I am trying to find an efficient way to trace the stream channel in an automated way rather than tracing the stream channel manually (Which becomes very tedious for a bigger area). I tried without success this Image classification tutorial, and I will appreciate it if anyone can help. 

Thank you in advance.