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Topics - bairgon

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Developers Corner / Calculating area from satellite images
« on: December 21, 2016, 11:54:24 AM »
Given an image like http://ocean.dmi.dk/arctic/images/MODIS/Lincoln/201612191227.NOAA.jpg how can I calculate the area of the Lincoln Sea "polynya"?

There are Sentinel images like http://ocean.dmi.dk/arctic/images/MODIS/Lincoln/20161220s01a.ASAR.jpg with lat/long, but these don't cover the complete area to be calculated.

As an alternative, can the images be accessed using Google Earth or similar, with polygon drawing tools? I tried importing an image as an overlay but found it difficult to match it up.

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