[Digikam-users] map view seems to use odd EXIF tags

[Michael G. Hansen]

Hi Martin,

since you used external software to update the EXIF data, it may be that 
the database of digikam was not updated yet. You can select your newly 
tagged photos and do Image->"Reread metadata from images".

If that does not work, please open a bug report and post a sample image.

Best regards,

Michael

On 12/31/2013 02:39 PM, Martin Gerner wrote:
> Hi all,
>
> I've noticed some odd behaviour with regard to how images are displayed
> in the map views, and I was hoping that somebody here could either
> clarify whether I've misunderstood something, or confirm whether there's
> a problem in Digikam.
>
> I used a piece of software to synchronize .gpx files with .jpg photos,
> with the effect of setting a number of GPS exif tags such as
> GPSLatitude, GPSLongitude, etc (GPSversionID is 2.3.0.0). My
> understanding is that geolocation tags can also be saved to "XMP Exif"
> tags - these tags were empty after synchronization.
>
> When I select these images in Digikam and hit Image -> Geolocation, I
> can see that the latitude, longitude and altitude were read correctly
> from the images, and they show up properly in the map. Great - it looks
> like the synchronization worked.
>
> However, if I close the geolocation window and instead click the "map"
> toolbar button, the photos are not shown in the map. Likewise, if I open
> the 'map search' side tab in the left side of the window, the photos
> don't show up there either, and if I add a geolocation filter to only
> include images with geolocation data, again they don't show up.
>
> It seems odd to me that the functions that read geocoded data in the
> 'geolocation' window would read information from different sources to
> the other windows. Also, other tools (e.g. Picasa and the
> synchronization tool I used) seem to handle the location fields fine
> (Picasa shows them as being properly geocoded).
>
> If I change the location of the photos in the geolocation window and
> apply the changes (from within Digikam), I can see that the XMP EXIF
> geolocation fields are updated for the photos; after this, they show up
> fine in the rest of the map views in Digikam.
>
> My suspicion at the moment is that the geolocation window reads location
> data from the 'plain' EXIF fields (and probably the XMP ones too), that
> inconsistently the rest of the map views only read the XMP fields, and
> that the reading of only the XMP fields is incorrect as it doesn't seem
> to match what other similar software does. It's a pain, since it means
> that Digikam doesn't operate well together with other software.
>
> I'm not an expert on this though, so I could be wrong. Does anybody
> know? I'd be happy to send an example image file to directly to anybody
> who would like to reproduce this.
>
> Thanks,
> Martin
>
>
>
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