Re: [OSM-talk] OpenBuildingModels repository

2012-08-10 Thread Tobias Knerr
On 03.08.2012 13:51, Matthias wrote:
 Tobias Knerr:
 In my opinion, it would be more future-proof to define legal terms for
 your repository that would always at least allow the models to be used
 under the same license as the one used by OSM at that point in time. An
 appropriate legal arrangement would have to be found, but I think that
 this would be an important effort.
 
 OK, maybe I got something wrong here. I chose ODbL because I thought
 that it is the new OSM license?! Admittedly, I don't know much about the
 recent license change and might have confused something.

The license change was made possible by the adoption of the Contributor
Terms, which grant the OSMF the right to publish OSM data under
CC-BY-SA, ODbL, or such other free and open licence [...] as may from
time to time be chosen by a vote of the OSMF membership and approved by
at least a 2/3 majority vote of active contributors.

So, basically, we can adopt a different license at any point in the
future without losing existing data. And if that ever happens, it would
imo be important that the content on OpenBuildingModels remains legally
compatible with OSM.

 But in general I get your point, that the license should always be the
 same as OSM. I don't know, though, how to formulate that properly in
 the licensing terms. If you know more about this, you could maybe
 suggest a concrete licensing text.

I could write something, but unfortunately, I'm not a legal expert
either. Maybe it would be a good idea to continue this discussion on
legal-talk? This question might even be of general interest because it
is somewhat relevant for any sister databases that connect with OSM.

So if it is ok with you, I'll post a question about this on legal-talk.
Or you can do it yourself, of course.

Tobias

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Re: [OSM-talk] OpenBuildingModels repository

2012-08-03 Thread Matthias
Ups, sorry!! I did not mean to answer to this topic but start a new 
one... Forget about this reply.


M.


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Re: [OSM-talk] OpenBuildingModels repository

2012-08-03 Thread Tobias Knerr
Hello Matthias,

what a surprise: I didn't expect an actual working beta for a building
model repository. You know from previous discussions that I believe such
a site is very much needed. So instead of repeating that, I'll skip
straight to the criticism. ;)

On 03.08.2012 11:19, Matthias wrote:
 a first prototype of the OpenBuildingModels platform is finally online.
 OpenBuildingModels aims to be a free-to-use online repository for
 architectural 3D building models. These models can be referenced in
 OpenStreetMap and are also displayed in the OSM-3D globe.

I'm a bit worried that this might be too strongly tied to the Heidelberg
OSM-3D globe. In particular, I have the following concerns:

* Is there, or will there be, an equivalent to the OSM planet files,
i.e. a possibility to download the entire content of your repository
(including metadata)?

* The VRML format is an odd choice. Afaik it is not commonly used in the
3D OSM community. What are your reasons for choosing it?

* Will yo make the source code for the website freely available, and do
you plan to accept outside contributions?

I hope you are willing to make this resource usable and trustworthy for
other developers. We really don't need multiple competing 3D model
repositories at this point.

 However, the
 models can just as well be freely used for any other purpose (ODbL
 license).

That's a worrisome choice, too - it seems that the models stored in the
repository will therefore become incompatible with OSM data if we ever
choose to use the relicensing clause of the Contributor Terms to switch
to a different license?

In my opinion, it would be more future-proof to define legal terms for
your repository that would always at least allow the models to be used
under the same license as the one used by OSM at that point in time. An
appropriate legal arrangement would have to be found, but I think that
this would be an important effort.

Tobias

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Re: [OSM-talk] OpenBuildingModels repository

2012-08-03 Thread Matthias

Hi Tobias,

thanks for your valuable feedback. I agree with your opinions regarding 
3D model repositories, collaborative work etc.


Tobias Knerr:


I'm a bit worried that this might be too strongly tied to the Heidelberg
OSM-3D globe. In particular, I have the following concerns:

* Is there, or will there be, an equivalent to the OSM planet files,
i.e. a possibility to download the entire content of your repository
(including metadata)?


At the moment it certainly is strongly linked to our OSM-3D approach.
However, the idea is to make the models of course available to any other 
3D viewer that wants to use them.
So far the models can only be browsed via the website and downloaded 
manually in .zip format. So there is no Download All, let alone an API 
or Web Service for the repository data.

This is definitely desirable and on the wishlist for future features.



* The VRML format is an odd choice. Afaik it is not commonly used in the
3D OSM community. What are your reasons for choosing it?


That's right. The reason for choosing VRML for the time being is the 
internal compatibility with our OSM-3D databases. This is to be changed 
in the future or at least an automatic conversion (with e.g. MeshLab) 
should be integrated, so that the user doesn't have to bother about the 
format.



* Will yo make the source code for the website freely available, and do
you plan to accept outside contributions?


Due to security issues (uploads to our servers) this is currently not 
planned. However, in general I do agree and would like to make it 
OpenSource. I have to discuss this with colleagues first :-)





However, the
models can just as well be freely used for any other purpose (ODbL
license).


That's a worrisome choice, too - it seems that the models stored in the
repository will therefore become incompatible with OSM data if we ever
choose to use the relicensing clause of the Contributor Terms to switch
to a different license?

In my opinion, it would be more future-proof to define legal terms for
your repository that would always at least allow the models to be used
under the same license as the one used by OSM at that point in time. An
appropriate legal arrangement would have to be found, but I think that
this would be an important effort.


OK, maybe I got something wrong here. I chose ODbL because I thought 
that it is the new OSM license?! Admittedly, I don't know much about the 
recent license change and might have confused something.
But in general I get your point, that the license should always be the 
same as OSM. I don't know, though, how to formulate that properly in 
the licensing terms. If you know more about this, you could maybe 
suggest a concrete licensing text.


So... it is basically a working platform, but still many open issues 
remain :-)


Cheers,
Matthias




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Re: [OSM-talk] OpenBuildingModels repository

2012-08-03 Thread Joakim Fors

On 3 aug 2012, at 11:19, Matthias u...@uni-heidelberg.de wrote:

 Hi all,
 
 a first prototype of the OpenBuildingModels platform is finally online.
 OpenBuildingModels aims to be a free-to-use online repository for 
 architectural 3D building models. These models can be referenced in 
 OpenStreetMap and are also displayed in the OSM-3D globe. However, the models 
 can just as well be freely used for any other purpose (ODbL license).
 
 Try it out yourself at http://openbuildingmodels.uni-hd.de

Any plans on replacing the current Windows only model viewer with a 
HTML5/Canvas/insert buzzword here 3D viewer?


 
 More information can be found in the Wiki:
 http://wiki.openstreetmap.org/wiki/OpenBuildingModels
 
 Please note that the platform is still in Beta stage. Any kind of feedback is 
 welcome!
 
 Best regards,
 Matthias Uden
 (bvbmatze)
 
 (Chair of GIScience, University of Heidelberg, Germany)
 
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