Hi
As I have both sw installed in my phone, i shot a pic and I tested
these 2 sw, reading the exif data with an online reader:
Geopaparazzi:
GPS
GPS Latitude Ref North
GPS Latitude 45.543404 degrees
GPS Longitude Ref East
GPS Longitude 8.072008 degrees
GPS Altitude 419 m
GPS Time Stamp 15:13:20
GPS Img Direction 187.56
GPS Date Stamp 2014:11:05
GPS Essentials:
GPS
GPS Latitude Ref North
GPS Latitude 45.543367 degrees
GPS Longitude Ref East
GPS Longitude 8.072114 degrees
GPS Altitude Ref Above Sea Level
GPS Altitude 368.3999938 m
GPS Speed Ref km/h
GPS Speed 0.071999998
GPS Date Stamp 2014:11:05
The only problem is where to find images in the phone directories…
Ciao
Emanuele
*Da:*[email protected]
[mailto:[email protected]] *Per conto di *Randal Hale
*Inviato:* mercoledì 5 novembre 2014 14:57
*A:* [email protected]; [email protected]
*Oggetto:* Re: [Qgis-user] Android Camera App with compass bearing
Hopefully this isn't going too off topic - so last year found me in
the Caribbean working on an addressing project.
I ended up using the Fulcrum app (not free) but it's really really
good. I used it in conjunction with QGIS and PostGIS. Everything is
stored in the "cloud" and you can download it in just about any format.
Take a look at this:
http://fulcrumapp.com/blog/viewing-photo-metadata/ it seems as though
it now is collecting direction (I need to go test this).
Randy
On 11/05/2014 08:39 AM, Zoltan Szecsei wrote:
Hi,
Thanks for the thought - but see orange text below: Does not write
bearing into EXIF fields.
Regards,
Zoltan
On 2014/11/05 12:17, Lene Fischer wrote:
GPS Essentials - App
Regards
Lene
-----Oprindelig meddelelse-----
Fra:[email protected]
<mailto:[email protected]>
[mailto:[email protected]] På vegne af Zoltan Szecsei
Sendt: 5. november 2014 07:02
Til:[email protected]
<mailto:[email protected]>;[email protected]
<mailto:[email protected]>
Emne: Re: [Qgis-user] Android Camera App with compass bearing
Hi Alex/All,
Thanks for the thoughts - my comments interspersed with your.
Kind regards,
Zoltan
On 2014/11/04 23:17, Alex Mandel wrote:
On 11/04/2014 04:55 AM, Zoltan Szecsei wrote:
Hi,
I need to do a field trip and take some photos.
I've been googling around, but cannot find an app that will
burn both
GPS position _and compass bearing_ into either the image, or
just the
exif data for that image.
Anyone got any experience in this need?
Thanks & regards,
Zoltan
Maybe,http://geopaparazzi.github.io/geopaparazzi/
"georeferenced and orientated pictures"
And now my long rant before I remembered the above link...
*I manually downloaded the latest version (newer than that on Play
Store) and it still does not record bearing* - even though the app does have a
bearing tool.
I checked the website and recording bearing into EXIF is not even on
the developer's long wish-list I have emailed the developer, with a hope to at
least get it onto the wish-list.
GPS data is an on/off toggle on most Android devices. Bearing does
appear possible according to the exif specs, but in practice is
rare.
http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/GPS.html
<http://www.sno.phy.queensu.ca/%7Ephil/exiftool/TagNames/GPS.html>
Yes, I checked that last night too - TAGs 0x0017 and 0x0018 relate to
bearing info.
However I don't see any obvious apps for telling the phone you want
to
capture that. I'm also not sure all phones are capable of
calculating
bearing when not moving.
So my suggested work around would be a GPS Logging application of
which there are several. Then you can pull the bearing calculation
out
after the fact, if it was while moving.
Sigh, nope.
(In my kind of) Field trip data collection (& photography) often
involves driving to a feature, leaning out the car window and taking a snap-shot,
so recording moving direction will not help at all.
Note that bearing accuracy is NOT that critical, it needs only to be
reasonably indicative.
If stationary, you might need to write your own app which lets users
indicate which way they were facing when taking a picture. For
someone
who's made an Android application I don't think this is hard.
http://developer.android.com/guide/topics/sensors/sensors_overview.htm
l Indicates all version of Android support the Magentic sensor.
This example shows how to get the bearing from the API
https://www.codeofaninja.com/2013/08/android-compass-code-example.html
So GPS+Orientation+Camera should be all required.
Yep, true, but the purpose of this thread is to see if this wheel has
already been invented :-)
Kinda busts my GPS logging idea, since the bearing information comes
from a different sensor than the GPS it won't be in the NMEA strings
even if you captured them.
What? You not 'hard core' enough to intercept the NMEA stream and insert
"bearing-on-the-fly" by back-calculating the incoming coords?
(Just pulling your leg - thanks for your interest in this topic :-) )
Thanks,
Alex
--
===========================================
Zoltan Szecsei PrGISc [PGP0031]
Geograph (Pty) Ltd.
GIS and Photogrammetric Services
P.O. Box 7, Muizenberg 7950, South Africa.
Mobile: +27-83-6004028
Fax: +27-86-6115323www.geograph.co.za <http://www.geograph.co.za>
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Randal Hale
North River Geographic Systems, Inc
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[email protected]
<mailto:[email protected]>
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