[OSM-talk-be] WMS (aerial) imagery covering Belgium, now conveniently packaged for adding it to JOSM

[Stijn Rombauts]

I just noticed this on https://www.agiv.be/producten/grb :' Tile Map Services (TMS-diensten)   Bevat 3 lagen: de GRB-basiskaart, de orthofoto’s en een hybridelaag met een selectie van GRB-entiteiten voor gebruik in combinatie met luchtopnames.' So a TMS already exists apparently... Or are these the 'older imagery from Agiv' Sander mentioned?

Regards,
StijnRR

      From: Jo <winfixit at gmail.com>
 To: Sander Deryckere <sanderd17 at gmail.com> 
Cc: OpenStreetMap Belgium <talk-be at openstreetmap.org> 
 Sent: Sunday, December 28, 2014 10:59 PM
 Subject: Re: [OSM-talk-be] WMS (aerial) imagery covering Belgium, now conveniently packaged for adding it to JOSM
   
It's possible to have people sign an EULA. Would that help? I'd need to know what the restrictions are though. I thought we were just not supposed to copy their building outlines. I guess the parcel outlines are off limits as well, but I don't see those with the paramters I provided.

I'd love to support iD as well, but why can't they program support for WMS? Why can't  they be as flexible as possible? It's absurd that we'd have to setup a server to convert from WMS to TMS or have iD users use older imagery than the enlightened users of JOSM. It almost seems easier to try and peel people away from the 'dark side'.

Jo

2014-12-28 21:50 GMT+01:00 Sander Deryckere <sanderd17 at gmail.com>:



Jo, I'm not sure that the GRB layer should be part of the default layer set. It becomes too dangerous people will use it without reading about the limitations.

But anyway, thanks for working on it.

Otoh, supporting iD is also important. We can't say "Don't trace from Bing" if people can't use Agiv in iD. For that, we would need a TMS. So that either means setting up a map proxy to convert WMS from Agiv to TMS, or finding some TMS layer available (there are TMS layers for older imagery from Agiv, but I've found none for the most recent imagery). Then, it needs to be added to this repo: https://github.com/osmlab/editor-imagery-index

But I'm not experienced enough with imagery to accomplish this.

Jo, are you, or is there anyone else wanting to look at this? I think it would save us a lot of problems.

Regards,
Sander

2014-12-28 21:39 GMT+01:00 André Pirard <A.Pirard.Papou at gmail.com>:

  On 2014-12-28 18:30, Jo wrote :
  
    This is long overdue, but I finally got round to it. I added a page
 
 https://josm.openstreetmap.de/wiki/Maps/Belgium
 
 with WMS sources for Belgium, for which we have permission to use.
 
 So now there are 3 more entries on this page:
 
 https://josm.openstreetmap.de/wiki/Maps
 
  The resolutions are all better than Bing. They are also more recent.
 
  Is there somebody who knows a convenient way to add those coordinates, so a shape is shown?
 
 AGIV also has coverage for Brussels, The Walloon imagery also covers the German speaking part of Belgium.
   
 Well done, Jo.  The only thing to do is now:
 JOSM>Imagery>Imagery Preferences[]>Available...>select BE...>Activate
 
  I don't know much about projections, but EPSG:4326 seems to work just fine for all three.
   
 Projections are simple: a mathematical transformation of the Earth surface to draw it on a plane (screen).
 EPSG:4326 uses the GPS coordinates (degrees) linearly (d ° NS/EW = c cm  vertically/horizontally).
 Cylindrical is the projection as if by light beams perpendicular to the Earth axis.
 Mercator is the same but with a vertical correction so that the polar regions are not flattened.
 These 3 are quickly transformed one to another with little CPU.
 Hence, JOSM, which normally uses Mercator on screen, can convert any to its screen projection.
 
 The (Belgian) cartographers use Lambert projections which is similar to cylindrical, but on a cone that is tangent to a line going across their country (Belgium).  This is so that the proportions of the distances are the same vertically and horizontally. The Belgian servers serve them too.  In addition to EPSG:4326.  Except SPW ( ;-) ).
 
  Feel free to improve/extend that wiki page, if you can.
   
 I would add Wallonia 2009.  It is sometimes useful (e.g. to get rid of trees).
 Is it just a matter of editing the file?  Have to refresh the server?
 Can id=SPW be the same or what should be used?
 
 What is that (3.xxxxxx) after the name JOSM displays? Any way to get rid of it?
 
 Cheers 
 
 
| André. |

 
 
 
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