[Bug 149485] New: Advanced image resize for the digikam editor

[xdmx]

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           Summary: Advanced image resize for the digikam editor
           Product: digikam
           Version: unspecified
          Platform: Gentoo Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: digikam-devel kde org
        ReportedBy: xdmx email it


Version:            (using KDE KDE 3.5.6)
Installed from:    Gentoo Packages

Hi everybody,
ok, the digikam's editor has already an image resizing, but if you want to edit an image without keeping the proportions is quite a bad thing... it's the same everywhere, i know...
but these days i'm looking after this: http://it.youtube.com/watch?v=vIFCV2spKtg
...and...i think it's awesome.
Do you think will be possible to have this feature in the editor? maybe in the version that will be going with kde 4.0...guys, this will be a real killer feature for everybody who loves photos :)
here there is a paper: http://www.faculty.idc.ac.il.nyud.net:8090/arik/imret.pdf
and here a porting of it in python :) http://blog.eikke.com/index.php/ikke/2007/09/02/seam_carving_content_aware_image_resizin
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[Gilles Caulier-4]

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           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|general                     |Image Editor
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------- Additional Comments From aldo-public laposte net  2007-09-03 13:45 -------
Someone also wrote some working code in QT4:
http://linuxfr.org/comments/861256,1.html

(Though he does not guarantee that it is exactly the same algorithm.)
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[Louis Roederer]

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------- Additional Comments From louis.roederer gmail com  2007-09-04 03:04 -------
I voted for this request because it is one of the most awesome features I've ever seen.  Wow!
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markcox email com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
      everconfirmed|0                           |1



------- Additional Comments From markcox email com  2007-09-04 03:31 -------
*** This bug has been confirmed by popular vote. ***
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[Gilles Caulier-4]

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------- Additional Comments From caulier.gilles gmail com  2007-09-11 09:34 -------
An implementation is available at http://diit.sourceforge.net/dirt.html

Gilles
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[Arnd Baecker]

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------- Additional Comments From arnd.baecker web de  2007-09-13 07:52 -------
Summary of the pano-tools thread http://www.nabble.com/smart-resizer----now-a-Photoshop-plugin-tf4426241.html

There is also a gimp plugin
    http://web.tiscali.it/carlobaldassi/ 
(installation as non-root does not work out-of-the-box, but otherwise ok)
and a non-source windows and linux version
  http://www.thegedanken.com/retarget/
(which on linux needs libwxgtk2.8-0, which I don't have ;-)

(Of course you can buy a photoshop plugin for $95 http://picutel.com/index.html
;-)
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m.debruijne matrict nl changed:

           What    |Removed                     |Added
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                 CC|                            |m.debruijne matrict nl
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[Arnd Baecker]

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------- Additional Comments From arnd.baecker web de  2007-10-09 15:42 -------
Bernhard Rode pointed out this one
 htp://sourceforge.net/project/showfiles.php?group_id=207056
on the mailing list.
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                 CC|                            |dumas65 gmail com



------- Additional Comments From caulier.gilles gmail com  2007-10-10 15:48 -------
*** Bug 150671 has been marked as a duplicate of this bug. ***
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[Gilles Caulier-4]

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           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Image Editor                |Wish for new plugin
            Product|digikam                     |digikamimageplugins
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[Gilles Caulier-4]

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------- Additional Comments From caulier.gilles gmail com  2007-10-10 16:04 -------
To be precise, the right source code to use where algorithm to resize image is, can be take in this package :

http://sourceforge.net/project/showfiles.php?group_id=207056&package_id=248124&release_id=544657

Code is pure C Ansi. It must be adapted to support 16 bits color depth. I recommend to backport this code in digiKam core (as digikam/libs/seamstress) and :

- Convert C Ansi code to C++.
- To use Digikam::DImg class as image data container.
- Implement 16 bits color depth support.
- Identify all parameters suitable by end users with this tool
- Make a small test program in command line to resize an image.
- When all is fine with algorithm, add a new option to current Resize Image tool of Image Editor with all identified parameters
- Implemented the the option in tool using the new C++ code from digiKam core.

Note : It not need to implement a new Image Editor plugin. The current Resize tool just need to be patched.

If somebody is interested to do it, let's me hear...

Gilles
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------- Additional Comments From Julien.Narboux inria fr  2007-10-10 16:44 -------
I just tried Arachnee : it is great. It would be very nice to have this tool incoporated inside Digikam.
Isn't it easier to patch the lib to deal with 16 bits instead of reimplementing within Digikam ?
It would be nice to have a qt interface to select and deselect regions of the picture as in the gtk tool.
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------- Additional Comments From chalkerx gmail com  2007-12-27 22:53 -------
http://sourceforge.net/projects/c-a-i-r/ (library)
http://code.google.com/p/seam-carving-gui/ (qt4 gui)

Good and fast, OS-independant.

But that is gplv3 only, although it might be possible to contact the authors.
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------- Additional Comments From yann.wintz ulp u-strasbg fr  2008-04-02 23:03 -------
Hello,

I am a student in University Louis Pasteur of Strasbourg (France) and my second semester project is to work on the different library which using seam carving for image resizing. Me and another student are working to find the best one, making some test, patch the lib to deal with 16 bits images and create a GUI plugin for digikam.
We have chosen three different library for our experiment:
 - Seamstress
 - Liquid Rescale
 - C-A-I-R

Our results:
Seamstress can't extend images and is too slow with big ones.
C-A-I-R have some trouble with specific images (ball became square).
But Liquid Rescale don't have any problem and is fast.
That's why for us the best one is Liquid Rescale (which is already used in GIMP). So we are interested to develop this library and create a GUI for the Digikam software.

NB: This projet is corresponding in any point to the google summer of code one.

Thanks.

Some references:
http://liblqr.wikidot.com/         (The library)
http://liquidrescale.wikidot.com/  (The plugin for GIMP)
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