Bug 125233

Summary: "purple fringe" correction tool
Product: [Applications] digikam Reporter: Dmitry Morozhnikov <dmiceman>
Component: Plugin-Editor-LensCorrectionAssignee: Digikam Developers <digikam-bugs-null>
Status: RESOLVED FIXED    
Severity: wishlist CC: caulier.gilles
Priority: NOR    
Version: unspecified   
Target Milestone: ---   
Platform: Gentoo Packages   
OS: Linux   
Latest Commit: Version Fixed In: 0.10.0
Sentry Crash Report:

Description Dmitry Morozhnikov 2006-04-09 17:11:59 UTC 
Version:            (using KDE KDE 3.5.1)
Installed from:    Gentoo Packages
OS:                Linux

Killer feature :-)

Simple CA (chromatic aberrations) correction plugin for digikam. Technically it can be simple as http://www.profibing.de/lisp/ca-correction.scm -- split image into RGB, resize layers separatelly and mix them again. Just with simple preview and rulers to adjust level of resize and select optical center (in case image was cropped and center of image is not center of lens).

It would be nice to have because most cheap cams and lenses have serious chromatic aberrations, especially cheap ultra-zoom cameras like my S2 IS.

Thanks!
Comment 1 caulier.gilles 2006-04-09 18:50:42 UTC 
No need to create a new tool for that. This color corrections must be added to current Lens Distortion corrector

Gilles Caulier
Comment 2 Dennis Gnad 2006-04-10 15:33:54 UTC 
Yeah this is a real good idea to do, my russian fisheye also suffers of a bit CA at the corners.
Comment 3 Arnd Baecker 2007-05-11 01:10:07 UTC 
See https://bugs.kde.org/show_bug.cgi?id=98651,
it should be (as mentioned by Gilles in #1 above) all be doable
with one tool using the planned Lens correction database
http://lists.freedesktop.org/archives/create/2007-May/000743.html
Comment 4 caulier.gilles 2008-04-17 10:23:27 UTC 
SVN commit 797980 by cgilles:

digiKam from trunk : LensCorrection image editor plugin : 

- Use right dialog to have fine editing Lens correction settings preview.
- Fix slots and signals names to be speedly read source code.
* Update preview with Lens type is changed.

Adrian: 

- Now plugin is suitable as well and work properlly, but of course uncomplete. 
- Bugs 143864 and 125233 will be closed when chromatic aberrations corrections will be corrected by this plugin.
- Still few camera model not supported properlly by LensFun. There is no message to gui to ping user about. 
- Sometime,  LensFun device is null when a camera model is selected. Why?
- We need to improve gui to have a manual correction: for ex, lens focal must be selectable somewhere, and certainly more settings as 
Apeture. We need to discut about.
- I think than a visual preview of distorsion using a grid is a excelent guide to users (like LensDistorsion plugin do)

CCMAIL: adrian@suse.de

BUG: 98651
CCBUGS: 143864
CCBUGS: 125233



 M  +58 -61    imageeffect_lenscorrection.cpp  
 M  +2 -2      imageeffect_lenscorrection.h  
 M  +43 -41    klensfun.cpp  
 M  +12 -10    klensfun.h  


WebSVN link: http://websvn.kde.org/?view=rev&revision=797980
Comment 5 caulier.gilles 2008-12-06 18:45:13 UTC 
With KDE4, this feature is now implemented with LensFun Based plugin.

Gilles Caulier