Re: [OSM-talk] Skybox for good imagery test

2014-11-30 Thread Rob Nickerson
This is not what Skybox has stated publicly (later), 
seehttps://lists.openstreetmap.org/pipermail/legal-talk/2014-November/008053.html
 
https://lists.openstreetmap.org/pipermail/legal-talk/2014-November/008053.html

This may or may not be in conflict with what Mikel wrote, but in any
case there is more than enough fuzziness to sit quiet at this point in time.

Simon


Thanks Simon, I hadn't seen that. Will speak with Mikel.

Rob
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[OSM-talk] Skybox for good imagery test

2014-11-29 Thread Stephan Knauss

I had a closer look at the imagery provided under the Skybox for good grant.
https://mapsengine.google.com/00979750194450688595-08887688179650036554-4/mapview/?authuser=0

Opening the GeoTiff directly in JOSM using the ImportImage plugin works 
but JOSM gets quite slow due to the large file size. So I decided to 
tile the image for easier viewing.


Alignment of the imagery looks fine. There is some distortion of the 
imgery compared to the existing OSM data. Without GPS tracks its 
difficult to say what is more accurate.


See for yourself around this area:
https://www.openstreetmap.org/#map=16/29.7137/91.7383

Data is here:
http://downloads.osm-tools.org/sb4g/

Browse either using a web browser or by adding a TMS layer to JOSM
tms[18]:http://downloads.osm-tools.org/sb4g/{zoom}/{x}/{-y}.png

I created the tiles from a 1.4 GB tif, resulting directory was 875MB. 
Creation took 16 minutes.


gdal2tiles.py -z 0-18 s02_20141006T032553Z-geo.tif sb4g

Keep in mind that the above imagery was no HOT activation. So using it 
for OSM is not allowed.
I assume someone at HOT will replicate the tiling once imagery is 
available and provide a TMS server.


Stephan

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Re: [OSM-talk] Skybox for good imagery test

2014-11-29 Thread Rob Nickerson
Just to pick up on your point about HOT. Google has confirmed that Imagery
released under Skybox for Good can be digitized into OSM under OSM's
license. This applies to all imagery whether the imagery was captured
following a request from HOT or any other organisation.

Currently we have the following statement:
https://lists.openstreetmap.org/pipermail/talk/2014-October/071318.html

Whilst a more formal written text is sitting with Mike Collinson and we
hope to have him and LWG ok it soon.

Best,
Rob

p.s. Any comments on alignment very welcome especially if evidenced with
GPS traces. :-D
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Re: [OSM-talk] Skybox for good imagery test

2014-11-29 Thread Simon Poole


Am 29.11.2014 22:51, schrieb Rob Nickerson:
 Just to pick up on your point about HOT. Google has confirmed that
 Imagery released under Skybox for Good can be digitized into OSM under
 OSM's license. This applies to all imagery whether the imagery was
 captured following a request from HOT or any other organisation.
 
 Currently we have the following statement:
 https://lists.openstreetmap.org/pipermail/talk/2014-October/071318.html
 

This is not what Skybox has stated publicly (later), see
https://lists.openstreetmap.org/pipermail/legal-talk/2014-November/008053.html

This may or may not be in conflict with what Mikel wrote, but in any
case there is more than enough fuzziness to sit quiet at this point in time.

Simon



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