I solved with the synthetic channels generation. Thanks GC Il giorno mer 19 set 2018 alle ore 22:39 Markus Neteler <[email protected]> ha scritto:
> On Wed, Sep 19, 2018 at 12:43 PM Giuseppe Cillis <[email protected]> > wrote: > > > > Thanks for the message, > > but when I try to run i.cluster with just one raster, the module doesn't > work because: " subgroup need two images" . > > ... this is because it requires two maps or more as input. Do you have > greyscale photos? If yes, i.e. you want to classify a single-band > image, then you can use other options: > > - generate synthetic channels (e.g., with r.texture) to be > additionally fed to i.cluster/i.maxlik > - use segmentation, e.g. with i.segment > > However, probably you have R, G, B available? Then, as per email by > Markus Metz, you need to first patch channel-wise the two orthophotos > into 3 mosaiks, then feed that to i.cluster/i.maxlik. > > HTH, > markusN >
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