[Digikam-devel] [Bug 191494] Wish: search offline collections (e.g. removable medias)

[Gilles Caulier]

https://bugs.kde.org/show_bug.cgi?id=191494





--- Comment #9 from Gilles Caulier <caulier gilles gmail com>  2009-05-05 17:52:34 ---
To Marcel,

I'm agree to separate DB : one for thumbs, another one for metadata.

The gain will be to use digiKam with remote media. Of course we lost
compatibility with opendesktop paper, but it's really important here ? Gwenview
and Dolphin/konqueror already support it. digiKam work out of simple desktop
image management scope now. For me it's not a problem, we are over :
photo-management.

With a dedicated thumbs DB, we can only save one thumbnail size by item :
256x256. No need to store another size as with OpenDesktop paper. As Mik said,
we can use JPEG with no compression value (to have the best image quality) or
better, another one based on wavelet compression to optimize DB size. Candidate
are :

JPEG2000 : GPL : slow (compression and decompression)
DJvu Photo : GPL : not yet tested.
OpenEXR : GPL : very slow (unadapted here)
HDPhoto : not GPL : Fast, but pattented by M$.
PGF : GPL : Not tested but very promissing :
http://en.wikipedia.org/wiki/Progressive_Graphics_File

The advantage to use wavelet instead JPEG : a better compression ratio than
JPEG : 5-10 !

Gilles

-- 
Configure bugmail: https://bugs.kde.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.