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creating footprint for scenproc

B

BrBlazer

Messages
481
Hi,

Is there any opensource or freeware tool that I can create building footprints for the places that has none in OSM? Not by hand, I mean automaticaly, like "Feature Analyst" and "ENVI", two payware tools that I believe are very very expensive. Anything like this that can be done with qgis, grass or saga?

Kindly,

Blazer
 
Hi,

You mean from imagery? I have been looking at the OpenCV toolkit, but that is not a ready to use tool. If I ever have a lot of spare time, this is something I would like to look deeper at. But no time at the moment :).
 
Yep, from imagery. I can't find a video right now, but I saw a youtube video of what I believe is an addon for arcgis that you select 3-4 shapes and it'll "guess" the remaining shapes. In the video the guy selected an aircraft on an apron, and the software selected automatically the remaining aircraft on the apron.

From what I searched both SAGA and Grass can do this (both freeware) but they don't seem to be as user friendly as QGIS that you used in the scenproc tutorial.
 
Hi,

I am sometimes using GRASS, but I am not sure it can do this. I should check that out.

It is still very hard to do this. There is special software for this kind of feature classification, but that costs like more than 10.000 dollar most of the time. And even than it does not always work well. To do it really well, you should not use only the visual part of the spectrum, but also other parts.
 
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