[prev in list] [next in list] [prev in thread] [next in thread] 

List:       kde-imaging
Subject:    Re: [Kde-imaging] Lossless image compression
From:       Gilles Caulier <caulier.gilles () gmail ! com>
Date:       2012-02-07 12:29:38
Message-ID: CAHFG6sEaePWY34Tw-0dcaihVKnfZ2Hy88DEdYhBWtgd37KMowg () mail ! gmail ! com
[Download RAW message or body]

2012/2/6 Boudewijn Rempt <boud@valdyas.org>:
> On Mon, 6 Feb 2012, Christoph Feck wrote:
>
>> Hi,
>>
>> you might have already read [1] of my current project "IZ" [2], aiming
>> for fast lossless image compression for photos.
>>
>> Performance wise, IZ lies in the "sweet spot" where it actually
>> improves loading time (because of less disk transfers), instead of
>> slowing it down (because of the slow compression). It is intended to
>> replace code where uncompressed data or only simple run-length
>> encoding was used because of speed constraints.
>>
>> The library currently only handles 8 bit RGB, mostly because of the
>> lack of a sufficiently large set of sample images which use 16 bit
>> and/or alpha channel. Pointers appreciated.
>
>
> Many cameras support 16 bit raw pictures; maybe Gilles has a database
> of useful images?B

http://digikam3rdparty.free.fr/TEST_IMAGES/

Some PNG, and TIFF are 16 bits here. All RAW files are 12/14 bits...

Gilles Caulier
_______________________________________________
Kde-imaging mailing list
Kde-imaging@kde.org
https://mail.kde.org/mailman/listinfo/kde-imaging
[prev in list] [next in list] [prev in thread] [next in thread]