[Digikam-users] GPS Logger - add GPS to exif

Tue Jun 8 10:59:30 BST 2010

just a short comment:

for downloading gpx files from your gps-device you might also want to have a look at 
"QLandkarte QT" and "QGIS". They also provide kind of GUI for gpsbabel. But of course: 
they are complex programs, so another way might be easier... but still those programs are 
great when you work with geographical data, so it might be worth the work.

And about the gpx files: As already said, you need the time stamps for a correlation. The 
time stamps are always deleted when you safe the file. A saved track is also reduced to 500 
waypoints only. This is done in order to free some space. So you always have to download 
you track before saving it. But when the track is logged directly on a SD-card, the time 
stamps are written on it as well and are not deleted afterwards.

But actually you were  writing about having a data logger... I and probably jim as well 
were talking about the Garmin hand held devices. So you have to play around and try in 
which way gpx files are stored in your logger...
I hope this still helped.

On Tuesday 08 June 2010, 02:44:58 jim junk wrote:
> I use the same tools that Michael uses but I'd like to give you what I
> think are a few helpful hints.  It's easiest if the camera and the GPS
> agree on the time.  I let the GPS get a fix and then use the GPS time to
> set the camera time.  You can adjust the times within the software but I'm
> into keeping things as easy as possible.
> 
> I always let the GPS get a fix and then start taking pictures.  On Garmin
> GPS units if you need to get more space for the track logs you can save
> your existing tract to the SD card BUT YOU NEVER WANT TO DO THAT as the
> track log is simplified meaning the date time stamp is removed making it
> useless for geocoding your images.  You can make the GPS take location
> points more frequently than it does in auto mode and you may want to do
> that if your moving fairly rapidly as you take photos.  I was shooting
> from a helicopter once and I had to adjust the image times in the
> geocoding software as the time just wasn't accurate enough.  I should have
> checked the GPS/camera time sync before I started shooting.  Notice it's
> hard to do something like that within DK but easy if you use the
> opensource "Copics Photo Mapper" in Windows as it shows a map and the
> location of selected photos on the map.
> 
> You can select all of your photos in a folder by clicking on the folder
> title bar.
> 
> The GUI interface for gpsbable is great but it seems to need administrator
> privileges.  I've used Linux for a really long time but I'm still not much
> of a geek so my work around is to just open a terminal and enter "sudo
> gpsbabel -t -i garmin -f usb: -o gpx -F
> /home/jim/Desktop/GarminTracks.gpx" and the track log shows up on the
> desktop as a GPX file.  I got the terminal string from the babel GUI and
> just cut and paste.  Notice that I have a Garmin GPS.  Yes you need to use
> a GPX file it's the standard GPS file interchange format for consumer
> grade GPS units.  Even Google Earth can read GPX files.
> 
> Yes Michaels right that you can select one or more geocoded images and then
> open the right panel geolocation tab and you'll have the points the photos
> were taken on the map.  You can have it display thumb nails of the images
> as well but the best thing is the left panel map search tab that lets you
> draw a rectangle on a map and all of the images geolocated within the
> rectangle will come up.  For me that feature alone makes me use DK
> everything else just makes it sweeter.
> 
> > Date: Mon, 7 Jun 2010 07:36:31 +0200
> > From: mike at mghansen.de
> > To: digikam-users at kde.org
> > Subject: Re: [Digikam-users] GPS Logger - add GPS to exif
> > 
> > On 06/07/2010 04:39 AM, Brano wrote:
> > > I'd like to ask about your workflow how to add the easiest way GPS info
> > > from GPS logger to exif on linux.
> > > 
> > > I found few utilities like
> > > http://sourceforge.net/projects/gps2photo/
> > > http://freefoote.dview.net/linux_gpscorr.html
> > > http://code.google.com/p/gpicsync/
> > > 
> > > Before I waste too much time on any of these, what's your best practice
> > > / workflow / tools to add GPS info to exif?
> > 
> > I use GPSSync which is part of kipi-plugins and can be used in digikam.
> > You have to install the kipi-plugins package from your distribution.
> > Then you can select some images and go to
> > "Image->Geolocation->Correlator" to have the coordinates from your
> > recorded tracks added to your images. Note that it can only read gpx
> > files, so you may have to convert your data to the gpx format using for
> > example gpsbabel. Once you have the coordinates written to your images,
> > you can use the "Map search" tab on the left side of digikam to search
> > for images on a map.
> > 
> > Michael
> > _______________________________________________
> > Digikam-users mailing list
> > Digikam-users at kde.org
> > https://mail.kde.org/mailman/listinfo/digikam-users
> 
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