[GRASS-web] Raster to Vector Auto Conversion

[Helmut Kudrnovsky]

info-6 wrote
> Hello;
> 
>  
> 
> In fact, I have a high resolution imagery and I wanna extract from it the
> existing Roads and Buildings as Vectors, so, I would like asking you
> please
> about the Automatic Edge detection and Export of the Roads and Bldgs (e.g:
> Export to .dwg for AutoCAD) if it can be done thru GRASS GIS and the
> procedure/steps to follow or video link in order to do it.
> 
>  
> 
>  
> 
> Kind Regards;
> 
>  
> 
> Eng. Zahi Khawand
> 
> Managing Director
> 
>  
> 
> LibanCiel  s.a.r.l
> 
> C.R  : 5002847
> 
> MoF : 2441600
> 
> Zalka 690-5th FL
> 
> M :  +961.3.456  157
> 
> E  :   <mailto:

> info@

> > 

> info@

> 
> W :   <http://www.libanciel.com/> www.libanciel.com
> 
>  
> 
> 
> 
>  
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such questions are asked better in the GRASS user mailing list. 

possible steps may be :

image segmentation:
i.superpixels.slic
r.mapcalc 
r.to.vect 

Or 

line dedection:

r.houghtransform
r.mapcalc 
r.to.vect 




-----
best regards
Helmut
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