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

[Moritz Lennert]

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.worldonline.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.

g.region rast=ortho_2001_t792_1m
i.group ortho input=ortho_2001_t792_1m
i.superpixels.slic group=ortho out=slic_test

And tying with and without the '-n' flag and the memory parameter.

Moritz