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4 votes
1 answer
888 views

Seeking GIS tool to automatically extract polygon geometries from images

Let's say I have multiple png images like the following one: I'd like to find a way where I can automatically draw polygon geometries on this image. Something like the following: My expectation is ...
raylight's user avatar
  • 1,163
2 votes
2 answers
658 views

Extracting coastline as vector from landsat 8 imagery?

I am trying to detect some sea level rise/fall for a specific region, from Landsat imagery. I went through the recommended methods of identifying water/land (MNDWI, AWEI, Bandratio 5/2, etc.). Now ...
Alin Radu's user avatar
  • 205
1 vote
6 answers
1k views

In what real-world examples do users still digitize features from a map?

Is digitizing of map features completely dead? For example, when and why do you still digitize features from a map? It can be heads digitizing up from a scanned paper map (or image, or whatever) or ...
7 votes
2 answers
9k views

Extracting road and building features from raster data using ArcGIS Desktop?

I work with raster data and my task is to digitize a big image. This consumes much time just for digitizing roads and buildings! I'm looking for tools to simplify working on raster data to digitize ...
GIS Man's user avatar
  • 1,123