[digiKam-users] Version 6 idea: store thumbnails as JPEG instead of PGF
tacman at gmail.com
Wed Mar 14 14:47:48 GMT 2018
Poking around the source code, I see that at one point there was some
support for storing JPEG thumbnails, but it's been hard-coded to PGF files:
Unfortunately, my C skills are ancient, and my sys-admin skills are pretty
weak as well, so I haven't been able to get the PGF console command to work
on my 64-bit Ubuntu installation. I think I've compiled the pgf library
okay, but the pgf console tool fails on finding freeimageplus, even after
installing it (well, I think I installed it).
So I'll keep playing around with alternative solutions to at least
prototype my idea.
Has anyone else worked on a web-based interface to DigiKam? I'll like to
brainstorm about it, is another thread on this forum the right place to
On Sun, Mar 11, 2018 at 1:01 PM, Gilles Caulier <caulier.gilles at gmail.com>
> Typically, using JPEG as a really disadvantage about thumbnail quality,
> especially with Hdpi screen. For that, I'm not favorable to propose JPEG as
> thumbs storage in DB.
> But i still open. Your request is to create a digiKam back-end to a
> web-based view photo collections. There are other standards for the web,
> emerging step by step, based on wavelets compression, as Webp or Heic.
> Both Webp and Heic are supported by ImageMagick, so PHP must do the
> conversion in background :
> In other words, we need space optimization, quality and speed. For the 2
> first ones, JPEG is not the right solution.
> Else about PGF, which is not supported by ImageMagick, a simple converter
> exists with libpgf, and can be called easily by PHP on you web server...
> Gilles Caulier
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