[GRASS-user] Summary of object-based classification possibilities in GRASS GIS (June 2014)

[Vaclav Petras]

Hi all,

Dough N. asked me about classification of results from i.segment module.
Here is the summary of current state in case somebody else is interested.

Vaclav


Moritz's steps and the main discussion:

[GRASS-dev] Object-based image classification in GRASS
http://lists.osgeo.org/pipermail/grass-dev/2013-October/066181.html
http://osgeo-org.1560.x6.nabble.com/Object-based-image-classification-in-GRASS-td5086693.html

Moritz's steps in a nice guide by Martin:

http://geo.fsv.cvut.cz/gwiki/153ZODH_/_15._cvi%C4%8Den%C3%AD
http://translate.google.com/translate?sl=cs&tl=en&js=n&prev=_t&hl=en&ie=UTF-8&u=http%3A%2F%2Fgeo.fsv.cvut.cz%2Fgwiki%2F153ZODH_%2F_15._cvi%25C4%258Den%25C3%25AD&act=url

Alternative notes by Moritz:

[GRASS-user] Classification of segments
http://lists.osgeo.org/pipermail/grass-user/2013-November/069254.html
http://osgeo-org.1560.x6.nabble.com/Re-Classification-of-segments-td5088837.html

Pietro's steps and tools:

http://lists.osgeo.org/pipermail/grass-dev/2014-January/066804.html
http://osgeo-org.1560.x6.nabble.com/Object-based-image-classification-in-GRASS-tp5086693p5096826.html

Another discussion about what variables to use:

[GRASS-dev] Object-based classification
http://lists.osgeo.org/pipermail/grass-dev/2013-August/065287.html
http://osgeo-org.1560.x6.nabble.com/i-segment-invalid-region-id-0-tp5066102p5070201.html

The source code of the classification tools:

http://svn.osgeo.org/grass/grass-addons/grass7/vector/v.class.ml/ (Pietro's
tool)
http://svn.osgeo.org/grass/grass-addons/grass7/vector/v.class.mlpy/
(Vaclav's tool)
http://svn.osgeo.org/grass/sandbox/turek/i.mlpy.py (Stepan's tool)

List of Python machine learning libraries (which I know about):

scikit-learn, http://scikit-learn.org/ (used by v.class.ml)
mlpy, http://mlpy.sourceforge.net/ (used by v.class.ml, v.class.mlpy and
i.mlpy)
Pandas, http://pandas.pydata.org/
Milk, http://luispedro.org/software/milk
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