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digiKam can write JPEG2000 metadata on the fly...
Submitted by cauliergilles on Thu, 2008-07-31 18:51Et voila...
...by the same way than TIFF and PNG, digiKam is now able to write JPEG2000 metadata on the fly. I have just patched Exiv2 library for that. See below a video demo of digiKam from KDE4 in action working with Metadata Editor over a JPEG2000 file and writting digiKam info to another PNG file.
See the full screen video (ogg - 9Mb)
If you don't know JPEG2000, it's another image container which support 16 bits color depth, color profile, wavelet lossless compression, XMP, EXIF, and IPTC. digiKam deal with JPEG2000 using Jasper library. Like this library is not able to play with metadata box from file format, all metadata manipulation are delagate to Exiv2 of course.
My code in Exiv2 will be available with 0.18 release. This will be a great version. Can you image to be able to backup all digiKam informations in JPEG, TIFF, PNG and JPEG2000 to improve interroperability between photo-management programs? This will be perfect for your photograph workflow. Nothing will be lost...
The next major task in Exiv2 will be to be able to store IPTC and XMP metadata in all RAW files based on TIFF/EP as Exiftool Perl tool do.