[OSM-talk] Updates to DigitalGlobe Imagery Layers

[Andreas Vilén]

What will this mean for saved offsets in Josm, both locally and on the servers?

/Andreas

Skickat från min iPhone

> 29 juni 2019 kl. 11:42 skrev Christoph Hormann <osm at imagico.de>:
> 
>> On Saturday 29 June 2019, Kevin Bullock wrote:
>> DigitalGlobe, now Maxar [1], is transitioning the OpenStreetMap
>> imagery endpoints (from “DigitalGlobe Standard” to “Maxar Standard”;
>> and from “DigitalGlobe Premium” to “Maxar Premium”). OSM users should
>> see content parity between the old and the new layers by June 30,
>> 2019. Starting July 1, 2019, there will be only two Maxar layers
>> available from within the OSM editors – labeled with Beta.
> 
> My usual question: will there be image metadata available for these 
> layers, preferably in a machine readable form that allows editors for a 
> spatially selective suggestion of the best available imagery?
> 
>> The good news: imagery will be more recent and more frequently
>> updated with our latest Maxar mosaic content. We hope that our
>> improved production processes (bundle block adjustment, atmospheric
>> compensation, continuous updates, etc.) will benefit OSM
>> contributors.
> 
> A quick look at some critical areas shows that while coverage is similar 
> or better than with the old layers there is a significant number of 
> places where either the Standard and Premium layers now feature the 
> same image or where a well mapping suitable image (at high latitudes 
> usually: near snow and ice minimum) is being replaced by a less mapping 
> suitable image:
> 
> https://www.openstreetmap.org/#map=13/73.4207/54.9987
> https://www.openstreetmap.org/#map=13/75.8010/-83.9056
> 
> There seem to be some rendering artefacts at the lower zoom levels:
> 
> https://earthwatch.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg/11/1940/304.jpg?connectId=d9c5e3ef-6300-4cec-9562-c1f27da6b2d9
> https://earthwatch.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg/13/2834/2333.jpg?connectId=d9c5e3ef-6300-4cec-9562-c1f27da6b2d9
> 
> Examples of useful improvements:
> 
> https://www.openstreetmap.org/#map=15/-57.1171/-26.8197
> https://www.openstreetmap.org/#map=14/75.8120/137.6692
> https://www.openstreetmap.org/#map=14/81.5993/-16.6763
> https://www.openstreetmap.org/#map=13/-77.9505/166.6831
> 
> -- 
> Christoph Hormann
> http://www.imagico.de/
> 
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