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Re: Gmapping and map_saver issue

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Re: Gmapping and map_saver issue

Dr. Markus Eich
Yes. It worked.

Repainting the gray vaules in the map inamge with Values 205,205,205 in GIMP
did the job, playing around with the map.yaml file did not do anything (i.e.
changing the thresholds)


Best wishes,


Markus


> -----Ursprüngliche Nachricht-----
> Von: Jeff Rousseau [mailto:[hidden email]]
> Gesendet: Freitag, 15. Januar 2010 17:02
> An: [hidden email]
> Betreff: Re: [ros-users] Gmapping and map_saver issue
>
> Markus,
>
> Sounds like a similar problem I had.  When you look at the PGM file
> that
> gmapping generated with a normal viewer (eog, gimp, etc) does it
> contain
> gray areas? If it does, than your occupied/free_thresh values in your
> map yaml file are cutting off the grey areas--you can either play with
> those values in the config or modify the image using a tool like the
> GIMP (I did the latter.)
>
> Hope this helps,
> Jeff
>
> Markus Eich wrote:
> > Dear all,
> >
> > I used the gmapping algorithm to generate a map, which works nicely.
> > During the mapping process I could see the occupancy grid with the
> > information of white(free),black(occupied) and gray (unexplored). For
> > displaying I used nav_view.
> >
> > I saved the map using map_saver according to the tutorial. When I use
> > the map running the map server, the map is only black and white, so
> it
> > seems the unknown cells are saved as free cells. When I used on of
> the
> > WG maps, the maps are shown correctly.
> >
> > I think the wrong map data causes our AMCL node to do strange things.
> I
> > attached a screenshot.
> >
> > What went wrong during the saving/loading process of the map?
> >
> >
> > Thank you
> >
> >
> >
> >
> >
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------------------------------------------------------------------------------
Throughout its 18-year history, RSA Conference consistently attracts the
world's best and brightest in the field, creating opportunities for Conference
attendees to learn about information security's most important issues through
interactions with peers, luminaries and emerging and established companies.
http://p.sf.net/sfu/rsaconf-dev2dev
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