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How to extract shoreline or to high water line from ETM and TM images ?

Question asked by kushal28 on Jul 13, 2017
Latest reply on Jul 14, 2017 by jayanta.poddar

I have downloaded ETM and TM images from Earth explorer, and trying to extract shoreline from the iimages which is bit confusing. I want to demarcate high water line or shoreline from the images.