[digiKam-users] Extracting thumbnails

[Wesley Smith]

This is fantastic news... I'll give this a go tonight.  Thank you.

On Wed, May 13, 2020 at 8:17 AM Gilles Caulier <caulier.gilles at gmail.com>
wrote:

> Hi,
>
> I prepared a small set of codes to load compressed blob file from
> database and convert to png.
>
> It's on my github account here:
>
> https://github.com/cgilles/digikam-pgf-database
>
> To compile, you need Qt5 devel package (core and gui) and cmake :
>
> git clone https://github.com/cgilles/digikam-pgf-database.git
> cd digikam-pgf-database
> mkdir build
> cd build
> cmake ..
> make
>
> enjoy...
>
> Gilles Caulier
>
> Le mer. 13 mai 2020 à 14:39, Wesley Smith <wss7932 at gmail.com> a écrit :
> >
> > Ok. So that is a little beyond my knowledge base. Is there a way, having
> exported the blobs, to decompress them?
> > On May 12, 2020, 11:28 PM -0500, Maik Qualmann <metzpinguin at gmail.com>,
> wrote:
> >
> > The actual blob is first of all a QByteArray compressed with qCompress.
> >
> > Maik
> >
> > Am Mittwoch, 13. Mai 2020, 05:05:41 CEST schrieb Gilles Caulier:
> >
> > Hi,
> >
> > blog are images in fact in wavelets compression format PGF :
> > https://en.wikipedia.org/wiki/Progressive_Graphics_File
> >
> > Best
> >
> >
> > Gilles Caulier
> >
> > Le mer. 13 mai 2020 à 04:56, Wesley Smith <wss7932 at gmail.com> a écrit :
> >
> > I have managed to lose an entire collection of images spanning years.
> > I've tried every way to get them back but, they are gone. I can still
> > see all of the thumbnails and so I know I can somehow extract them but, I
> > don't know how. It's the only thing I have left of them. I know they're
> > small but, that's better than gone. I have tried opening the database in
> > sqlite browser and extracting, I've tried a python script that was
> > hopeful but, the files exported are not images, just *.blob. What can I
> > do?
> >
> >
> >
> >
> >
>
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