[GRASS-user] i.superpixels.slic not working

[Markus Metz]

On Mon, Jun 12, 2017 at 4:57 PM, Moritz Lennert <
mlennert at club.worldonline.be> wrote:
>
>
>
> Le 12 juin 2017 15:25:36 GMT+02:00, James Duffy <
james.philip.duffy at gmail.com> a écrit :
> >On 12 June 2017 at 12:09, Moritz Lennert <mlennert at club.worldonline.be>
> >wrote:
> >
> >> On 12/06/17 12:11, James Duffy wrote:
> >>
> >>>
> >>>
> >>> On 12 June 2017 at 11:00, Moritz Lennert
> ><mlennert at club.worldonline.be
> >>> <mailto:mlennert at club.worldonline.be>> wrote:
> >>>
> >>>     On 12/06/17 11:38, James Duffy wrote:
> >>>
> >>>         On 12 June 2017 at 10:36, Moritz Lennert
> >>>         <mlennert at club.worldonline.be <mailto:mlennert at club.worldonl
> >>> ine.be>
> >>>         <mailto:mlennert at club.worldonline.be
> >>>
> >>>         <mailto:mlennert at club.worldonline.be>>> wrote:
> >>>
> >>>             On 12/06/17 11:25, James Duffy wrote:
> >>>
> >>>                 Hello,
> >>>
> >>>                 I'm trying to run the following:
> >>>
> >>>                 *i.superpixels.slic -n group=mod1 at PERMANENT
> >output=test
> >>>                 num_pixels=5000
> >>>                 memory=10000
> >>>
> >>>                 *
> >>>                 The output gives me the following:
> >>>
> >>>                 (Mon Jun 12 10:17:40
> >>>                 2017)
> >>>                 i.superpixels.slic -n group=mod1 at PERMANENT
> >output=test
> >>>                 num_pixels=5000
> >>>                 memory=10000
> >>>                 Cache data in memory mode
> >>>                 Loading input...
> >>>                 WARNING: Initialized 5036 of 5070 seeds
> >>>                 Performing k mean segmentation...
> >>>
> >>>                 And then I get a 'GRASS 7 has stopped working' box
> >pop up.
> >>>
> >>>                 I tried again with the default settings for the
> >module:
> >>>
> >>>                 *i.superpixels.slic group=mod1 at PERMANENT output=test
> >>>
> >>>                 *
> >>>                 And got the same error.
> >>>
> >>>                 I am using windows 10 professional and GRASS 7.3.svn
> >>> (2017).
> >>>
> >>>                 Has anyone else got this module working, or had the
> >same
> >>>         problem
> >>>                 on Windows?
> >>>
> >>>
> >>>             I haven't had any problems running it on Linux, and some
> >>>         colleagues
> >>>             have run it on Windows.
> >>>
> >>>             Just for our info: What are your region settings ?
> >>>
> >>>
> >>>         projection: 1 (UTM)
> >>>         zone:       43
> >>>         datum:      wgs84
> >>>         ellipsoid:  wgs84
> >>>         north:      25183.22184529
> >>>         south:      25157.71783908
> >>>         west:       301463.66480893
> >>>         east:       301494.2431551
> >>>         nsres:      0.07775612
> >>>         ewres:      0.0778075
> >>>         rows:       328
> >>>         cols:       393
> >>>         cells:      128904
> >>>
> >>>         Just to add, I am running i.segment.uspo without problems
> >using
> >>>         the same
> >>>         imagery group and the same region.
> >>>
> >>>
> >>>     Yes, the region is actually very small, so no problem from
> >there. It
> >>>     might be an issue with the memory handling. Could you try
> >without
> >>>     setting the memory parameter, i.e. using its default value of
> >300
> >>>     and tell us what happens ?
> >>>
> >>>
> >>> *#default memory*
> >>> *i.superpixels.slic -n group=mod1 at PERMANENT output=test
> >>>
> >>> *
> >>> Produced the same problem.
> >>>
> >>
> >> Can you reproduce using the NC demo data set ?
> >>
> >> I.e.
> >>
> >>
> >Running:
> >
> >
> >>
> >>
> >> *g.region rast=ortho_2001_t792_1m i.group ortho
> >input=ortho_2001_t792_1m
> >> i.superpixels.slic group=ortho out=slic_test*
> >>
> >
> >Worked for me.
> >
> >
> >
> >*i.superpixels.slic -n group=ortho out=slic_test*
> >Also works.
> >
> >
> >
> >*i.superpixels.slic group=ortho out=slic_test memory=10000 *
> >Crashed.
> >
>
> The issue arises when the module uses memory mode, i.e. when it reads the
entire map into memory.
>
> The issue is way above my pointer foo, so you'll have to wait for a fix

Fixed in r71177. The windows add-on should be available by tomorrow.

Markus M


> and use only disk mode (by setting memory low enough) or download the
previous version of the add-on from
https://trac.osgeo.org/grass/browser/grass-addons/grass7/imagery/i.superpixels.slic?rev=70478&format=zip
and install from the zip using g.extension ... url=.
>
> Moritz
>
>
> >
> >
> >*i.superpixels.slic -n group=ortho out=slic_test memory=10000  *
> >Crashed.
> >
> >
> >> And tying with and without the '-n' flag and the memory parameter.
> >>
> >> Moritz
> >>
> >>
> >>
> >James
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