[GRASS-user] Road and river extraction using GRASS

Moritz Lennert mlennert at club.worldonline.be
Thu Oct 18 02:12:44 PDT 2012

On 17/10/12 19:50, António Rocha wrote:
> Greetings,
> Is there any GRASS module that can be used to river and road extraction
> from satellite images? Some feature extraction algorithm

See here for an example of a python script implementing a Sobel edge 
detection filter:


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