[Osmf-talk] [OSM-dev] low altitude aerial images layer at OpenStreetMap

Tue Aug 25 14:55:21 UTC 2015

Hi Blake,

A quadrocopter cannot be flown higher than 150 meters due to 
regulations. Usually a flight in a city happens happens like this. I 
carefully select a takeoff & landing ground. It could be a lawn in a 
park, a grass area, empty construction site, etc. preferably early in 
the morning.

I switch on the GoPro to make one photo per second, then I take off and 
fly only above this empty area. So practically it is out of the question 
to fly above a city freely to make orthorectified imagery of the whole 
city. However panoramic low altitude (50 - 150 meters) aerial photos 
could be shot in all directions and are complimentary to satellite 
imagery. And it is possible to find such an area for takeoff and safe 
landing almost everywhere.

As for programming this feature, an image is just uploaded, coordinates 
and camera direction are saved in a database for this image. Maybe also 
a rating system.

Prosumer UAVs progressed a lot this year. Now it has a Fail Safe - 
returning to the point where it took-off automatically, Home-Lock, - if 
a pilot lost orientation, it starts moving to the pilot the shortest 
way, Course-Lock - independent of yaw, forward remains forward (very 
useful at altitude higher than 100 meters, when it is hard to see the 
UAV's orientation). So it is relatively easy and safe to pilot. It also 
has now self-tightening propellers. I takes about a minute to put them 
on for a flight and remove for a compact transportation.

Also this year the GoPro 4 Session camera appeared. It weighs only 72 
grams. F450 DJI can easily carry two such cameras. Opposite to the 
StreetView approach it is not necessary to walk or drive every street to 
film it. A dozen or two of flights in good weather will cover the entire 
city.

And as I already said the system is very robust. Even if a crash 
happens, having built it from an ARF kit oneself makes it just a mater 
of several minutes to exchange a spare part or two. If there is a 
special layer for 50 - 150 meters aerial photos on the OSM map, it is 
quite realistic that people could start shooting such aerial photos and 
upload. I hope to learn more on this subject at the conference next month.

Best regards,
Oleksiy

On 25/08/15 14:58, Blake Girardot wrote:
>
> Hi,
>
> OpenAerialMap is designed to take georeferenced aerial imagery and 
> make it publicly available for mapping.
>
> OpenDroneMap is processing only software, but you do end up with a 
> stitched together georeferenced, orthorectified image and point cloud 
> files.
>
> http://openaerialmap.org/
>
> http://opendronemap.github.io/odm/
>
> Cheers,
> Blake
>
>
>
> On 8/25/2015 8:49 AM, Jaak Laineste wrote:
>> Hello,
>>
>> Btw, what is current state of special services to share the data?
>> openstreetphoto is dead, mapilliary could almost be used [1], but it is
>> not really optimised for it. With drone imagery software you get 3D
>> models “for free” as part of processing/SfM, you often (but not always)
>> georeference your data etc. Anyone knows about  on opendronephoto
>> project yet?
>>
>> Sharing with plain photo sharing service just does not feel right.
>>
>> Jaak
>>
>> [1] http://blog.mapillary.com/technology,/update/2014/05/20/drones.html
>>
>>
>> 2015-08-25 8:44 GMT+03:00 Oleksiy Muzalyev <oleksiy.muzalyev at bluewin.ch
>> <mailto:oleksiy.muzalyev at bluewin.ch>>:
>>
>>     Good morning,
>>
>>     Here are some of panoramic aerial images which I made in Odessa,
>>     Ukraine, with the quadrocopter F450 DJI (flight controller Naza V2
>>     with GPS) and camera GoPro 4 Session. One such an image may cover
>>     several square kilometers. It does not substitute satellite imagery,
>>     but provides useful information for mapping: building levels,
>>     land-use, etc.
>>
>>     And it is not necessary to have hundreds of photos for just one
>>     street as with a Street-View approach. So it is not necessary to
>>     have the newest servers for such a layer.
>>
>>     City of Odessa, Ukraine:
>>     https://goo.gl/photos/Jnt4TaXuxyw7j6kR8
>>
>>     and town of Bilhorod-Dnistrovs'kyi:
>>     https://goo.gl/photos/ve3NPBSg98v46n5J7
>>
>>     to get the HD photo download it, do not save from the browser 
>> screen.
>>
>>     <https://goo.gl/photos/Jnt4TaXuxyw7j6kR8>F450 DJI is assembled from
>>     the ARF (almost ready to fly kit), so it is easy to upgrade and
>>     repair. It is a robust flying platform. Let alone camera GoPro 4
>>     Session.
>>
>>     Mapillary accept aerial images but a flight should be only 4 - 5
>>     meters above the ground. I published several aerial images on Google
>>     Maps though, and the number of views is in thousands. Images are to
>>     be geo-tagged before publishing to Google Maps.
>>
>>     There will be the conference "How drones changing your business" in
>>     Lausanne, Switzerland, on September 14th and 15th 2015:
>>     <http://droneapps.co/>http://droneapps.co/ . Among attendees are
>>     DJI, Airbus, Lufthansa, SenseFly, DB Bahn, SNCF, and others.
>>
>>     I am also experimenting with fixed-wing UAVs. It is much harder to
>>     learn to pilot well, but a fixed-wing UAV is capable by now to fly
>>     about 200 km along a waypoint route with an autopilot.
>>
>>     So the idea is to implement such a panoramic aerial imagery layer at
>>     the OSM.
>>
>>     Best regards,
>>     Oleksiy
>>
>>
>>
>>     _______________________________________________
>>     dev mailing list
>>     dev at openstreetmap.org <mailto:dev at openstreetmap.org>
>>     https://lists.openstreetmap.org/listinfo/dev
>>
>>
>>
>>
>> -- 
>> Jaak Laineste
>>
>>
>>
>> _______________________________________________
>> osmf-talk mailing list
>> osmf-talk at openstreetmap.org
>> https://lists.openstreetmap.org/listinfo/osmf-talk
>>

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