Any advice on assessing road density on the map/image – March 22, 2023 at 07:56AM

I know that most likely it’s not the right question for this community, and it’s likely an ML question than GIS. Anyway, I’d appreciate any hints.

Is there any relatively simple and straightforward way to estimate relative road density per image?

Let’ say I have two areas of roughly the same size (see images). It’s “obvious” that one has more ‘dense’ road map than the other. But if you need to process thousands of such images, ranking them from less to more dense (no ‘absolute’ value is needed), how would you proceed?

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High density (Berlin)

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Low density (Ostroleka, Poland)