Hello Jaak,
Please, note that flying an UAV by waypoints (autopilot) is limited by
regulations and in hardware by No-Waypoint-Zones:
http://www.dji.com/fly-safe/category-gs , it is 8 km around all major
airports.
However, translational flights above a city are possible with UMX
Airplanes (Ultra Micro eXtreme Planes). The drones are very light and
small, they are made from a foam, but a powerful flight-controler
(onboard computer) make them stable and airworthy. They can fly with the
speed about 100 km/h (landing is still hard as with all fix-wing and
should be trained first on an UAV simulator).
GoPro 4 Session camera is water-sealed up to 10 m depth, but it is not
necessary for aerial shooting, neither inbuilt WiFi. I mean a quality HD
camera could even lighter than 72 grams and suitable for an UMX aircraft.
Low altitude panoramic aerial photos could be published also at
Wikipedia. For example, I published the image of the Akkerman fortress
at this article, in Gallery section:
https://en.wikipedia.org/wiki/Bilhorod-Dnistrovskyi . On this photo one
can see not only the entire medieval fortress and also the excavation of
the Tira, an ancient Greek and later Roman colony (in the right lower
corner). And as we were told at the conference in NYC earlier this year
there will be in future a link between Wikipedia articles, data and the OSM.
Best regards,
Oleksiy
On 26/08/15 07:51, Jaak Laineste wrote:
Does anyone have experience using it in real life? Speciality of
UAV/drone mapping is that you cover really small area, like with
mapknitter, but you pre-process a lot. AFAIK the typical scenario of
UAV mapping is following:
1. use http://planner.ardupilot.com/ (or other soft your drone maker
gives/supports) to plan your mission
2. do your mission, have thousands of images and separate GPS log as
result.
3. process your images. The most popular/best soft for this seems to
be Agisoft Photoscan Pro. It is much more than just stitching: also 3D
model needs to be created (using SfM). It is really heavy work: for
30-minute shooting your computer would process them for an hour or
two. Not practical yet for the cloud.
4. georeference your data. For the small area and high resolution GPS
(with error ~5m or more) is often not enough, so you may need
pre-measured control points, use good base reference map data or other
method to do it. But it really depends on your use case.
5. Agisoft can export DEM (3D) and GeoTIFF as result.
6. Now data sharing - my original question. I guess I can upload my
geotiff to openaerialmap or mapknitter, still there are several concerns:
a) none of the tools seems to take my DEM data, so I cannot share it.
b) usability as OSM mapper for very small area maps (100x100m
perhaps). Openaerialmap UX question, can I find the images easily.
c) usability as image viewer - as end-user I’d expect something closer
to streetview, not to-down 2D map. At least show it as 3D model what I
already have.
d) why would anyone really need it? OSM has low (“GPS level”)
accuracy, so for general mapping it may be often way more faster and
const-effective just to survey the area using handheld GPS and piece
of paper. I can see some use cases:
- new city district/quarter, not in satellite/aerial yet. You should
have quite big coverage UAV (e.g. glider, not just quadrocopter),
otherwise manual mapping could be more effective.
- area is not physically accessible by foot
- shared geo-imagery is byproduct of your nice new toy picture
collection.
- because I can, it is fun etc - probably most common reasons today
Jaak
On 26 Aug 2015, at 02:22, Liz Barry <[email protected]
<mailto:[email protected]>> wrote:
+1 to openaerialmap and opendronemap
Mapknitter.org <http://Mapknitter.org> also connects your imagery
into osm editors
On Aug 25, 2015 11:01 AM, "Oleksiy Muzalyev"
<[email protected] <mailto:[email protected]>> wrote:
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
<[email protected] <mailto:[email protected]>
<mailto:[email protected]>
<mailto:[email protected]>>:
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>
<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/>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
[email protected] <mailto:[email protected]>
<mailto:[email protected]> <mailto:[email protected]>
https://lists.openstreetmap.org/listinfo/dev
--
Jaak Laineste
_______________________________________________
osmf-talk mailing list
[email protected] <mailto:[email protected]>
https://lists.openstreetmap.org/listinfo/osmf-talk
_______________________________________________
osmf-talk mailing list
[email protected] <mailto:[email protected]>
https://lists.openstreetmap.org/listinfo/osmf-talk
_______________________________________________
osmf-talk mailing list
[email protected] <mailto:[email protected]>
https://lists.openstreetmap.org/listinfo/osmf-talk
_______________________________________________
dev mailing list
[email protected]
https://lists.openstreetmap.org/listinfo/dev
