Please, note that flying an UAV by waypoints (autopilot) is
limited by regulations and in hardware by
, 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
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.
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:
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
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
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
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
+1 to openaerialmap and opendronemap
also connects your imagery into osm editors
On Aug 25, 2015 11:01 AM, "Oleksiy
Muzalyev" <oleksiy.muzalyev <at> bluewin.ch
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
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
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
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.
On 25/08/15 14:58, Blake Girardot wrote:
OpenAerialMap is designed to take georeferenced
aerial imagery and make it publicly available for
OpenDroneMap is processing only software, but you do
end up with a stitched together georeferenced,
orthorectified image and point cloud files.
On 8/25/2015 8:49 AM, Jaak Laineste wrote:
Btw, what is current state of special services to
share the data?
openstreetphoto is dead, mapilliary could almost
be used , 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
Sharing with plain photo sharing service just does
not feel right.
2015-08-25 8:44 GMT+03:00 Oleksiy Muzalyev <oleksiy.muzalyev <at> bluewin.ch
<mailto:oleksiy.muzalyev <at> bluewin.ch>>:
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:
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:
and town of Bilhorod-Dnistrovs'kyi:
to get the HD photo download it, do not save
from the browser screen.
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
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
There will be the conference "How drones
changing your business" in
Lausanne, Switzerland, on September 14th and
<http://droneapps.co/>http://droneapps.co/ . Among
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
So the idea is to implement such a panoramic
aerial imagery layer at
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