geotagging alters image file?

[gsv000]

Greetings,

I am running kpa version 4.4 fedora 20 64bit.
I was just experimenting with the correlator to geotag photos from a
recent vacation, and I noticed that the exif headers of the geotagged
images now include the coordinates. Isn't it possible to save the
results of geotagging either in index.xml or a version of exif.db? I
have always liked that kphotoalbum does not touch the original image files.

Is there an option I am missing? I was unable to find anything relevant
by searching the internet.

Thanks

George

[Tobias Leupold]

I noticed that the exif headers of the geotagged images now include the
coordinates. Isn't it possible to save the results of geotagging either in
index.xml or a version of exif.db? I have always liked that kphotoalbum does
not touch the original image files.

Why would you not want to store the coordinates inside the files? There's a
dedicated EXIF header for that! Either that photo has been taken there or not
;-)

Anyways, the tagging itself is AFAIK not done by KPA itself, but by the
geolocation kipi-plugin.

Yours, Tobias

[Johannes Zarl]

Post by Tobias Leupold
Why would you not want to store the coordinates inside the files? There's a
dedicated EXIF header for that! Either that photo has been taken there or not
;-)

One reason would be that you can store the images in a read-only location.
Another usecase would be that the integrity of the image files is kept intact
when you need to prove that the images have not been tampered with.
Or simply that your backup program doesn't back up the image files a second time... ;-)

Post by Tobias Leupold
Anyways, the tagging itself is AFAIK not done by KPA itself, but by the
geolocation kipi-plugin.

True. So I guess it's best to ask there...

[Tobias Leupold]

Post by Johannes Zarl
One reason would be that you can store the images in a read-only location.

That's a good argument, but what do you do with EXIF rotation? It also has to
be stored in the headers and also alters the file.

[Miika Turkia]

Post by Johannes Zarl

Post by Johannes Zarl
One reason would be that you can store the images in a read-only

location.
That's a good argument, but what do you do with EXIF rotation? It also has to
be stored in the headers and also alters the file.

EXIF rotation is stored by the camera and we just read it. When an image is
rotated in KPA, that information is stored on KPA DB, not to the EXIF.

miika

[Miika Turkia]

Post by Tobias Leupold

I noticed that the exif headers of the geotagged images now include the
coordinates. Isn't it possible to save the results of geotagging either in
index.xml or a version of exif.db? I have always liked that kphotoalbum does
not touch the original image files.

Why would you not want to store the coordinates inside the files? There's a
dedicated EXIF header for that! Either that photo has been taken there or not
;-)

Design principle of KPA was not to alter images, and I really like that principle. A loss of images is less likely to happen that way.

Post by Tobias Leupold
Anyways, the tagging itself is AFAIK not done by KPA itself, but by the
geolocation kipi-plugin.

The kipi plugins are independent of KPA and they do alter images. I do not think that we can really affect how they work.

miika

[gsv000]

Post by Miika Turkia

Post by Tobias Leupold

I noticed that the exif headers of the geotagged images now include the
coordinates. Isn't it possible to save the results of geotagging either in
index.xml or a version of exif.db? I have always liked that kphotoalbum does
not touch the original image files.

Why would you not want to store the coordinates inside the files? There's a
dedicated EXIF header for that! Either that photo has been taken there or not
;-)

Design principle of KPA was not to alter images, and I really like that principle. A loss of images is less likely to happen that way.

I just made the same point to Tobias (in PM, because I did not notice
the list response).

Post by Miika Turkia

Post by Tobias Leupold
Anyways, the tagging itself is AFAIK not done by KPA itself, but by the
geolocation kipi-plugin.

The kipi plugins are independent of KPA and they do alter images. I do not think that we can really affect how they work.

OK I will look a little in their mailing list to see if it makes sense
to ask about this.

Thank you for KPA

Post by Miika Turkia
miika
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