If you found a utility or script that could extract info to gpx then you could pass that on to maemo-mapper as a command line parameter.

Perhaps you could download the file utility to see if it can read the exif tags in such a way that a script could parse to send to maemo-mapper. Or upload a sample image and i will see if it does.

Im sure theres some linux source code somewhere specifically for this purpose though, which could be compiled to do this extraction to gpx.

Do you know what format the exif tag uses for geo-encoding... if its GPS/GPX i think it will work with maemo-mapper.

I will be including GPX files to be associated with my dbus-switchboard utility in the next release... if a script gets devised (by me or others), i could include that as well. That just means that (if you choose to), you could open file manager and click on a jpg and it would open maemo-mapper and pin the geo location on the map (as it will for gpx files)

If quiver supports external tools, then you could maybe point it also to the devised script to extract and launch maemo-mapper and not even have to leave quiver.