[OSM-legal-talk] Are objects still tainted when they are edited from a better source ?

[Jean-Marc Liotier]

Continued from a talk@osm thread, as suggested by Mikel Maron.

When I use high-resolution imagery to improve areas formerly mapped from 
low-resolution imagery, I change the source tag on the objects I touch - 
i.e. from Yahoo low resolution satellite to Microsoft Bing 
satellite. Since my edit is correlated with a change of source, can it 
still be considered as a tainted derivative ?


Modifying a way mapped from low-resolution imagery to take advantage of 
high-resolution imagery changes it so much that the result barely takes 
advantage of the previous version. It does take advantage of the fact 
that the object exists, which makes the work somewhat easier (except 
maybe in dense areas where it can even make it more complicated) - is 
that enough to make it a derivative work unable to be migrated under the 
new license ? That improvement process is rather close to a remapping... 
Or should I just remap ?


What is the opinion the experts on legal-talk ?

___
legal-talk mailing list
legal-talk@openstreetmap.org
http://lists.openstreetmap.org/listinfo/legal-talk

Re: [OSM-legal-talk] Are objects still tainted when they are edited from a better source ?

[Dermot McNally]

On 15 December 2011 15:17, Jean-Marc Liotier j...@liotier.org wrote:

 When I use high-resolution imagery to improve areas formerly mapped from
 low-resolution imagery, I change the source tag on the objects I touch -
 i.e. from Yahoo low resolution satellite to Microsoft Bing satellite.
 Since my edit is correlated with a change of source, can it still be
 considered as a tainted derivative ?

What you describe seems to me a reasonable argument for considering
the _geometry_ clean. In particular, many of us are strongly of the
view that an untagged node which is moved can be deemed clean by
virtue of the fact that no aspect of the node endures from any
previous unclean state. You haven't indicated whether, in these cases,
you would have moved every single node, though that seems not to be
the main weakness in your scenario...

What about non-geometric aspects of the way? Perhaps it has a name, a
highway type, a lanes tag or whatever. If these tags have a clean
history, once again, I would be in favour of considering the object
clean. But you can't really deem the entire way clean just by
recreating the geometry if you also retain unclean tags.

Dermot


-- 
--
Igaühel on siin oma laul
ja ma oma ei leiagi üles

___
legal-talk mailing list
legal-talk@openstreetmap.org
http://lists.openstreetmap.org/listinfo/legal-talk