Howto Extract Exif GPS Metadata from JPEG?

Question

Hi,
i want to extract GPS Metadata from a JPEG.
The JPEG is a photo taken with an HP iPAQ hw6900 PDA.
Serveral application like exif-o-matic can extract the GPS latitude/longitude metadata.
As described in the Oracle interMedia/Multimedia Userguide "Chapter 6 - Working with Metadata" i use a pl/sql procedure to extract these metadata.
http://download.oracle.com/docs/cd/B28359_01/appdev.111/b28415/ch_metadata.htm#CIAEFDGH
I insert a row and extract the metadata but in the exif xml column there are no gps metadata only width/height and so on.
How do i extract these informations?

Answer 1

I got an XML document with no GPS metadata.
With "select p.image.getMetadata('exif') from photos p where id = xx;" i got sys.xmltype(sys.xmltype)
and with "select p.metaexif.extract('/').getStringVal() from photos p where id = xx;" I got an xml string like these
<exifMetadata xmlns="http://xmlns.oracle.com/ord/meta/exif" xsi:schemaLocation="http://xmlns.oracle.com/ord/meta/exif http://xmlns.oracle.com/ord/meta/exif" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<TiffIfd>
<Model tag="272">hp iPAQ hw6900</Model>
</TiffIfd>
<ExifIfd tag="34665">
<ExifVersion tag="36864">0220</ExifVersion>
<LightSource tag="37384">unknown</LightSource>
<Flash tag="37385">
<Fired>No</Fired>
<Return>No strobe return function</Return>
<Mode>unknown</Mode>
<Function>Yes</Function>
<RedEyeReduction>No</RedEyeReduction>
</Flash>
<PixelXDimension tag="40962">1280</PixelXDimension>
<PixelYDimension tag="40963">1024</PixelYDimension>
<DateTimeOriginal tag="36867">2008-05-28T15:02:36.000000</DateTimeOriginal>
</ExifIfd>
</exifMetadata>
In the oracle xml shemata specification exists a gps section but in my example there is no gps metadata
You can find the jpg at http://public.tfh-berlin.de/~s21656/HPIM0014.jpg
thanks in advance
Message was edited by:
Steffen