Re: [GRASS-dev] Object-based image classification in GRASS

2014-02-13 Thread Moritz Lennert
On 12/02/14 13:41, Nikos Alexandris wrote: Salut GRASSers, Moritz Lennert wrote: [..] With all the elements in place, especially with Pietro's recent work, it should be quite easy to create a unifying module 'i.segment.classify' which would take as input - the segments coming out of i.segmen

Re: [GRASS-dev] Object-based image classification in GRASS

2014-02-12 Thread Martin Landa
Hi, 2014-02-12 13:41 GMT+01:00 Nikos Alexandris : [...] > think of simply using "r.statistics2" and providing an input "cover=" map btw, it remembers me that we haven't yet decided about renaming `r.statistics2` and `r.statistics3` to any reasonable name... Martin -- Martin Landa * http:

Re: [GRASS-dev] Object-based image classification in GRASS

2014-02-12 Thread Nikos Alexandris
Salut GRASSers, Moritz Lennert wrote: [..] > With all the elements in place, especially with Pietro's recent work, it > should be quite easy to create a unifying module 'i.segment.classify' > which would take as input > > - the segments coming out of i.segment > - training zones > - a choice of

Re: [GRASS-dev] Object-based image classification in GRASS

2014-01-29 Thread Moritz Lennert
On 28/01/14 14:47, Martin Landa wrote: Hi Moritz, 2013-10-30 Moritz Lennert : though some components would be nice to have in addition. Attached you can find a simple shell script which shows all the steps I went through. I commented it extensively, so it hopefully is easy to understand. I j

Re: [GRASS-dev] Object-based image classification in GRASS

2014-01-28 Thread Martin Landa
Hi Moritz, 2013-10-30 Moritz Lennert : > though some components would be nice to have in addition. Attached you can > find a simple shell script which shows all the steps I went through. I > commented it extensively, so it hopefully is easy to understand. I just wanted to thank you for the scrip

Re: [GRASS-dev] Object-based image classification in GRASS

2014-01-09 Thread Pietro
Dear Moritz, On Thu, Jan 9, 2014 at 10:13 AM, Moritz Lennert wrote: >> 3. v.stats [r58637] => Extract statistics from a vector map >> (statistics about shape and about raster maps). >> v.stats internally use (in grass-addons): >> - v.area.stats [r58636] => extract so

Re: [GRASS-dev] Object-based image classification in GRASS

2014-01-09 Thread Moritz Lennert
Dear Pietro, On 07/01/14 18:33, Pietro Zambelli wrote: Dear all, Some news about the machine learning classification of image segments. Thanks for the great work !!! Just a few questions/comments: 3. v.stats [r58637] => Extract statistics from a vector map (statistics about sh

Re: [GRASS-dev] Object-based image classification in GRASS

2014-01-07 Thread Pietro Zambelli
Dear all, Some news about the machine learning classification of image segments. The process described below has been used to classify some RGB images for two different regions with more than 1 billions of pixels, and more than 2.7 millions of segments. Working with such challenging figures re

Re: [GRASS-dev] Object-based image classification in GRASS

2013-11-01 Thread Pietro
On Thu, Oct 31, 2013 at 3:03 PM, Luca Delucchi wrote: >> [0] https://github.com/zarch/i.segment.hierarchical > > Could I suggest you to use the grass-addons repository ;-) Ok, moved (i.segment.hierarchical) to grass-addons (r58137). Pietro ___ grass-de

Re: [GRASS-dev] Object-based image classification in GRASS

2013-10-31 Thread Luca Delucchi
On 31 October 2013 00:34, Pietro Zambelli wrote: > Hi Moritz, > > Hi Pietro > > > [0] https://github.com/zarch/i.segment.hierarchical > Could I suggest you to use the grass-addons repository ;-) Thanks -- ciao Luca http://gis.cri.fmach.it/delucchi/ www.lucadelu.org

Re: [GRASS-dev] Object-based image classification in GRASS

2013-10-31 Thread Pietro Zambelli
On Thursday 31 Oct 2013 10:09:20 Moritz Lennert wrote: > Great ! Then I won't continue on that and rather wait for your stuff. Do > you have code, yet (except for i.segment.hierarchical) ? Don't hesitate > to publish early. I did some stuff here: https://github.com/zarch/ml.class But I'm working

Re: [GRASS-dev] Object-based image classification in GRASS

2013-10-31 Thread Moritz Lennert
On 30/10/13 21:23, Pierre Roudier wrote: Moritz, Thanks heaps for the script. It's really is useful and will facilitate the adoption of i.segment. It certainly would be a nice addition to the wiki page. I can put it there as a proof-of-concept, but apparently Pietro is alreay much further on

Re: [GRASS-dev] Object-based image classification in GRASS

2013-10-31 Thread Moritz Lennert
Hi Pietro, On 31/10/13 00:34, Pietro Zambelli wrote: Hi Moritz, I'm writing some modules (in python) to basically do the same thing. Great ! Then I won't continue on that and rather wait for your stuff. Do you have code, yet (except for i.segment.hierarchical) ? Don't hesitate to publish ea

Re: [GRASS-dev] Object-based image classification in GRASS

2013-10-30 Thread Pietro Zambelli
Hi Moritz, I'm writing some modules (in python) to basically do the same thing. I'm trying to apply a Object-based classification for a quite big area (the region is more than 14 billions of cells). At the moment I'm working with a smaller area with "only" ~1 billions of cells, but it is stil

Re: [GRASS-dev] Object-based image classification in GRASS

2013-10-30 Thread Pierre Roudier
Moritz, Thanks heaps for the script. It's really is useful and will facilitate the adoption of i.segment. It certainly would be a nice addition to the wiki page. Unfortunately I can't comment too much on this, as my object-based classification projects are on hold, but I'll try to give that a sho