[OSM-talk] DJI Fly SafeGEO ZONE MAP uses OSM data... without attribution

Nuno Caldeira nunocapelocaldeira at gmail.com
Tue Mar 19 18:48:29 UTC 2019

After more investigation noticed that the military facilities on OSM 
that don't have name, also don't have a name on DJI also. If you search 
on OSM the name of the facility based on DJI info they match... wonder why
Few users reporting that the geometry don't match in some countries (i 
presume they simplified the geometry in polygon with X ammount of 
vertices) or they have used other data. Compared the data from 10 EU 
countries and they all match OSM.

More evidence ( compare the geometries and the coordinates of the vertices):

Wrong military base name (in English)
OSM https://www.openstreetmap.org/way/555214494/history
DJI https://screenshots.firefox.com/md51uwmdBUjSEtlI/www.dji.com

This Maritime Police station is wrongly tagged on OSM... is also on DJI 
DJI has it https://screenshots.firefox.com/CBdSziw1bg9Z58Fc/www.dji.com

OTAN terminal https://www.openstreetmap.org/way/177395459/history
DJI exact same polygon 

DJI https://screenshots.firefox.com/589CWyXHvrolF7Fy/www.dji.com

DJI https://screenshots.firefox.com/K42sB4B5DalFx2Sr/www.dji.com

DJI https://screenshots.firefox.com/LzMBa9Jx0mvidAGP/www.dji.com

Hungary - Notice the divisions betweent the different military facilties 
that are split...same on DJI
DJI https://screenshots.firefox.com/vO7anIZe5EEJADcQ/www.dji.com

Às 11:42 de 19/03/2019, Nuno Caldeira escreveu:
> I don't see other data than airports in Taiwan. As I mentioned on the 
> initial, I'm talking about the military facilities and prisons, not 
> airports. China also don't have military facilities on their map, 
> being a Chinese company they probably filtered it.
> A terça, 19/03/2019, 11:28, Dennis Raylin Chen <b92612009 at gmail.com 
> <mailto:b92612009 at gmail.com>> escreveu:
>     Not in Taiwan.
>     They just use the data release by the authorities. No data from
>     OpenStreetMap.
>     Dennis
>     On Tue, Mar 19, 2019 at 6:55 AM Nuno Caldeira
>     <nunocapelocaldeira at gmail.com
>     <mailto:nunocapelocaldeira at gmail.com>> wrote:
>         Was curious where DJI managed to get a worldwide DB of
>         polygons of military facilities and points of prisons, triple
>         checked with a couple of other users of OSM at Telegram and
>         with polygons i added seven years ago. Without a doubt its
>         from OSM, the coordinates of the vertices matches OSM
>         perfectly. The names are also the same...
>         Check yourself, head to https://www.dji.com/pt/flysafe/geo-map
>         select your country, zoom in and check the data. Airports
>         restriction areas seems not to be OSM data, but from other
>         source.
>         Share your examples if you will.
>         Again, sadly no attribution... tried to request via Twitter
>         https://twitter.com/iamnunocaldeira/status/1105897635796447235
>         .... silent as in moon why would they reply to a contributor
>         blah. The Pandora box has been opened with exceptions about
>         the attribution, if other don't attribute, why would they?
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>         talk at openstreetmap.org <mailto:talk at openstreetmap.org>
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