[gdal-dev] Image segmentation

[Markus Neteler]

On Tue, Apr 21, 2009 at 7:01 PM, Frank Warmerdam <warmerdam at pobox.com> wrote:
> Giacomo Piva wrote:
>>
>> Hi All,
>> I'm looking for a function that create an image segmentation.
>> Is there a function in the GDAL collection that permit to do that?
>
> Giacomo,
>
> No, I don't believe there is.
>
> By segmentation do you mean single band reclassification (ie. values
> 0-10 map to 1, values 20-35 map to 2, etc)?   Or are you thinking of
> multispectral classification?  Or perhaps something else?

Image segmentation is the spatial partitioning of an image typically.

> In any event, there is nothing in GDAL itself to do any of these.

In GRASS you can find it:
http://grass.osgeo.org/grass64/manuals/html64_user/i.smap.html

Best
Markus