Bug 278963

Summary:	Add support of geographic direction in geolocation tags
Product:	[Applications] digikam	Reporter:	Martin Burnicki <martin.burnicki>
Component:	Plugin-Generic-GeolocationEdit	Assignee:	Digikam Developers <digikam-bugs-null>
Status:	REPORTED ---
Severity:	wishlist	CC:	caulier.gilles, dirk.kde, simonandric5
Priority:	NOR
Version:	4.6.0
Target Milestone:	---
Platform:	openSUSE
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Martin Burnicki 2011-07-31 19:41:00 UTC

Version:           1.8.0 (using KDE 4.6.0) 
OS:                Linux

As far as I know some high end cameras with an integrated GPS receiver have also a built-in compass, so they also "know" the direction at which a photo is taken, and can save this information in the photo's metadata.

Reproducible: Didn't try



Expected Results:  
Currently you can open a photo in the geo editor (map) to see and/or edit the location where the photo was taken. A great feature would be to be able to do another click into the map to define the direction at which the photo was taken.

A quick Google search yields there are EXIF tags called GPSDestLatitude/GPSDestLongitude, or GPSDestBearing, which can store this information.

Comment 1 Marcel Wiesweg 2011-08-03 19:00:12 UTC

I would be interested in some sample images. We implemented support for this in the database a few years ago, but I never saw this in real life.

Comment 2 Martin Burnicki 2011-08-03 20:28:42 UTC

Unfortunately I don't have a camera which supports this, that's why I've put this on the DK wish list. ;-)

So I can't provide any images. However, some investigation using Google seems to indicate the relevant EXIF tags are "GPS Img Direction Ref" and "GPS Img Direction" which are also mentioned here:
http://www.exiv2.org/tags-xmp-exif.html

Flickr supports displaying the EXIF data of uploaded photos, so a Google search for 

  exif "GPS Img Direction" site:flickr.com

yields a number of hits for such photos, including the camera model, e.g.:
http://www.flickr.com/photos/gilbi/5997418061/meta/in/photostream/ (Sony DSC-HX5V)
http://www.flickr.com/photos/35772676@N02/5876463774/meta/ (Casio EX-H20G)
http://www.flickr.com/photos/11573583@N02/5974310287/meta/ (Apple iPhone 4)

A huge number of photos found by this search has been taken by iPhones 4 or 3GS. Here's one which has been taken using a Canon EOS 500D:
http://www.flickr.com/photos/trippinlarry/5477247804/meta/ (Canon EOS 500D)

Since that camera does not provide a GPS or compass, the GEO tags must have been recorded with an external tagger, or have been added manually, using some application which already supports this.

Comment 3 caulier.gilles 2011-12-22 13:19:53 UTC

Martin,

This file still valid using kipi-plugins 2.4 ?

Gilles Caulier