Bug 91745

Summary: New resize algorithm based on G'MIC.
Product: [Applications] digikam Reporter: Chag <chagam>
Component: Plugin-Bqm-GmicAssignee: Digikam Developers <digikam-bugs-null>
Status: RESOLVED FIXED    
Severity: wishlist CC: caulier.gilles
Priority: NOR    
Version: unspecified   
Target Milestone: ---   
Platform: Compiled Sources   
OS: Linux   
Latest Commit: Version Fixed In: 8.4.0
Sentry Crash Report:

Description Chag 2004-10-20 11:02:32 UTC 
Version:           0.7 beta 1 (using KDE KDE 3.2.3)
Installed from:    Compiled From Sources
Compiler:          gcc version 3.3.2 (Mandrake Linux 10.0 3.3.2-6mdk) 
OS:                Linux

Hi,

Could it be possible to have some more informations about the resize algorithm ? I can see many filters about resizing images (lanczos, triangle, mitchell, etc. but which one should I use ?
which one is better, which one is faster ? I heard about BiCubic, is Cubic the same ? It's good to have many filters but I think the non-specialist end-user just cares for quality (speed no longer really matters whith current processor)

Chag
Comment 1 caulier.gilles 2004-11-28 23:26:28 UTC 
You can find a full documentation at this url :

http://www.cit.gu.edu.au/~anthony/graphics/imagick6/resize/

Complete documentation for kipi plugins are in construction. i will provide full information in about resize algorithm...

Gilles Caulier
Comment 2 Joern Ahrens 2006-02-04 17:34:16 UTC 
*** Bug has been marked as fixed ***.
Comment 3 caulier.gilles 2024-05-26 09:02:58 UTC 
With next digiKam 8.4.0, a new G'MIC processor tool for the Batch Queue Manager
will be available. The G'MIC scaling filters has the desired options :

Image editor :

https://i.imgur.com/gzUc5KX.png
https://i.imgur.com/6o0CsSN.png

BQM :

https://i.imgur.com/0bQrJk4.png
https://i.imgur.com/xw4VPsa.png

Plenty of other G'MIc tools are also available for your workflow, and
more (in fact over 600 filters to process photo). The settings from an Image
Editor G'MIC-Qt filter can be backported to the BQM using the 'copy' button on
the top of the dialog.

Gilles Caulier