[KPhotoAlbum] GPS - get info from gpx, not from Exif

[Tobias Leupold]

Hi Benny!

There's no "official" way to bypass storing the GPS data in the EXIF 
header. The EXIF DB is just a cache so that the data does not have to be 
read from the images directly, so changes to the database will be 
overwritten if some image's data is re-read.

Why don't you want to store the data in the EXIF header? This won't change 
your image data, and there's a specific EXIF field for this very use case. 
It's just like storing the correct roation of an image.

Getting the correct coordinates from a GPX track is not such an easy task 
in some cases (according to my experience), thus I check the coordinates 
and store them in the images to be sure they are correct.

At the moment, I don't see a reliable and persistant way to bypass the EXIF 
mechanism and still use the map parts of KPA ...

Cheers, Tobias

Am Donnerstag, 23. Februar 2017 12:21:57 CET schrieb Benny Simonsen:
> Hi,
>
> If I have understood the GPS mechanism correct, then the GPS 
> location is taken from the Exif data.
> But I have also some gpx files that I would like to use for 
> getting GPS positions of my images *without* modifying my 
> pictures.
>
> I know that I can use e.g. gpsprune to embed the GPS data into 
> the exif of the images, but I don't like to modify my original 
> images from camera.
>
> What is the recommended way or how does other use the GPS support?
> My approach is to embed the GPS into exif-info.db from a script 
> - but are there cases where the data in exif-info.db are 
> flushed, except if I delete it; regenerate it from KPhotoAlbum?
>
> The script should be fully automatic based on:
> - Camera ID(first part of filename)+timestamp in index.xml
> - gpx-files (named depending on if it is mine, or another family member)
> - A separate meta-data file:
>   - Correlates camera and qpx files (can change over time)
>   - Time offset in cameras
>
> Anyone knowing of something that I should look into to get 
> inspired / reuse - It could e.g. be a good tool for injecting 
> GPS data into images that I modify to inject it into 
> exif-info.db instead.
>
> Br,
> Benny
>
>