[Digikam-users] GPS data for raw files in xmp sidecar

[Gilles Caulier]

Marcel,

I have just check Exiv2 from trunk :

- XMP sidecar is now supported.
- Photoshop PSD file (read only : Exif/IPTC/XMP extraction supported.)
- JPEG200 file (read only : Exif/IPTC/XMP extraction supported... but
who use it (:=))))
- GIF (read only image info only)
- TGA (read only image info only)
- BMP (read only image info only)

Marcel, PSD support in digiKam is very important. we only support 8
bits color depth, using QT image loader. We need a dedicated DImg
image loader to support 16 bits color depth.

About TIFF writting support : no idea yet. I CC Andreas to have more info...

Gilles Caulier



2008/4/15, Gilles Caulier <caulier.gilles at gmail.com>:
> 2008/4/15, Marcel Wiesweg <marcel.wiesweg at gmx.de>:
>
> > > Hi list,
>  >  > being interest in geotagging and script savvy I have a script for
>  >  > associating my ~ gps coordinate data with my raw image files by writing
>  >  > them (with Image::ExifTool) into an XMP sidecar file. It looks like this:
>  >  >
>  >  > <?xpacket begin='' id='W5M0MpCehiHzreSzNTczkc9d'?>
>  >  > <x:xmpmeta xmlns:x='adobe:ns:meta/' x:xmptk='Image::ExifTool 7.15'>
>  >  > <rdf:RDF xmlns:rdf='http://www.w3.org/1999/02/22-rdf-syntax-ns#'>
>  >  > ~ <rdf:Description rdf:about=''
>  >  > ~  xmlns:exif='http://ns.adobe.com/exif/1.0/'>
>  >  > ~  <exif:GPSAltitude>546962/1169</exif:GPSAltitude>
>  >  > ~  <exif:GPSAltitudeRef>0</exif:GPSAltitudeRef>
>  >  > ~  <exif:GPSImgDirection>0/1</exif:GPSImgDirection>
>  >  > ~  <exif:GPSImgDirectionRef>T</exif:GPSImgDirectionRef>
>  >  > ~  <exif:GPSLatitude>47,50.230283N</exif:GPSLatitude>
>  >  > ~  <exif:GPSLongitude>12,58.573992E</exif:GPSLongitude>
>  >  > ~  <exif:GPSMapDatum>WGS-84</exif:GPSMapDatum>
>  >  > ~ </rdf:Description>
>  >  > ~ <rdf:Description rdf:about=''
>  >  > ~  xmlns:photoshop='http://ns.adobe.com/photoshop/1.0/'>
>  >  > ~  <photoshop:City>Rott</photoshop:City>
>  >  > ~ </rdf:Description>
>  >  > </rdf:RDF>
>  >  > </x:xmpmeta>
>  >  > <?xpacket end='w'?>
>  >  >
>  >  > Now the question is: will the XMP support of future digikam versions read
>  >  > those sidecar files along with the embedded exif information from the raw
>  >  > file?
>  >
>  >
>  > About support for XMP and GPS coordinates in the database: Yes, this will be
>  >  supported in 0.10.
>  >  The problem here are the sidecar files, I dont know if they are supported yet
>  >  by libexiv2 or if there are plans for this. Actually, I dont know anything
>  >  about such files. Gilles?
>  >
>
>
> Well, XMP sidecar support by libexiv2 is under progress. It will be
>  normally implemented for next release.
>
>
>  >  What is already working is to read in a GPX file from your GPS tracker,
>  >  associate with the Geolocalization KIPI plugin and have the data in the
>  >  digikam database. (Note: All this applies to the 0.10 / KDE4 version only)
>  >
>  >
>
>
> Yes, and here i GPS tag all my RAW files using digiKam for KDE4. This
>  is want mean than a little script to extract GPS info from DB will be
>  trivial to do fo a script guru (not me)
>
>
>  Gilles
>